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Finding the Fourth Proportional to 7,201.17, 9,939.47 and 4,689.54

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Solution

The fourth proportional to 7,201.17, 9,939.47 and 4,689.54 is: 6,472.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,201.17 : 9,939.47 = 4,689.54 : x
  2. Step 2: Convert to fraction form
    7,201.17/9,939.47 = 4,689.54/x
  3. Step 3: Cross multiply
    7,201.17x = 9,939.47 × 4,689.54
  4. Step 4: Simplify right side
    7,201.17x = 46,611,518.70
  5. Step 5: Solve for x
    x = 46,611,518.70/7,201.17
  6. Step 6: Final answer
    x = 6,472.77

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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.