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Finding the Fourth Proportional to 6,740.64, 9,302.40 and 3,947.04

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Solution

The fourth proportional to 6,740.64, 9,302.40 and 3,947.04 is: 5,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,740.64 : 9,302.40 = 3,947.04 : x
  2. Step 2: Convert to fraction form
    6,740.64/9,302.40 = 3,947.04/x
  3. Step 3: Cross multiply
    6,740.64x = 9,302.40 × 3,947.04
  4. Step 4: Simplify right side
    6,740.64x = 36,716,944.90
  5. Step 5: Solve for x
    x = 36,716,944.90/6,740.64
  6. Step 6: Final answer
    x = 5,447.10

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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.