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Finding the Fourth Proportional to 7,809.91, 10,777.95 and 4,273.12

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Solution

The fourth proportional to 7,809.91, 10,777.95 and 4,273.12 is: 5,897.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809.91 : 10,777.95 = 4,273.12 : x
  2. Step 2: Convert to fraction form
    7,809.91/10,777.95 = 4,273.12/x
  3. Step 3: Cross multiply
    7,809.91x = 10,777.95 × 4,273.12
  4. Step 4: Simplify right side
    7,809.91x = 46,055,452.34
  5. Step 5: Solve for x
    x = 46,055,452.34/7,809.91
  6. Step 6: Final answer
    x = 5,897.05

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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.