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Finding the Fourth Proportional to 7,809.95, 10,777.47 and 4,272.92

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Solution

The fourth proportional to 7,809.95, 10,777.47 and 4,272.92 is: 5,896.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809.95 : 10,777.47 = 4,272.92 : x
  2. Step 2: Convert to fraction form
    7,809.95/10,777.47 = 4,272.92/x
  3. Step 3: Cross multiply
    7,809.95x = 10,777.47 × 4,272.92
  4. Step 4: Simplify right side
    7,809.95x = 46,051,267.11
  5. Step 5: Solve for x
    x = 46,051,267.11/7,809.95
  6. Step 6: Final answer
    x = 5,896.49

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.