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Finding the Fourth Proportional to 6,689.70, 9,227.60 and 4,302.78

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Solution

The fourth proportional to 6,689.70, 9,227.60 and 4,302.78 is: 5,935.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,689.70 : 9,227.60 = 4,302.78 : x
  2. Step 2: Convert to fraction form
    6,689.70/9,227.60 = 4,302.78/x
  3. Step 3: Cross multiply
    6,689.70x = 9,227.60 × 4,302.78
  4. Step 4: Simplify right side
    6,689.70x = 39,704,314.36
  5. Step 5: Solve for x
    x = 39,704,314.36/6,689.70
  6. Step 6: Final answer
    x = 5,935.15

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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.