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Finding the Fourth Proportional to 7,102.77, 9,801.05 and 4,118.19

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Solution

The fourth proportional to 7,102.77, 9,801.05 and 4,118.19 is: 5,682.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,102.77 : 9,801.05 = 4,118.19 : x
  2. Step 2: Convert to fraction form
    7,102.77/9,801.05 = 4,118.19/x
  3. Step 3: Cross multiply
    7,102.77x = 9,801.05 × 4,118.19
  4. Step 4: Simplify right side
    7,102.77x = 40,362,565.51
  5. Step 5: Solve for x
    x = 40,362,565.51/7,102.77
  6. Step 6: Final answer
    x = 5,682.65

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Half scale
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Double scale
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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.