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Finding the Fourth Proportional to 7,200.66, 9,938.76 and 4,689.04

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Solution

The fourth proportional to 7,200.66, 9,938.76 and 4,689.04 is: 6,472.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.66 : 9,938.76 = 4,689.04 : x
  2. Step 2: Convert to fraction form
    7,200.66/9,938.76 = 4,689.04/x
  3. Step 3: Cross multiply
    7,200.66x = 9,938.76 × 4,689.04
  4. Step 4: Simplify right side
    7,200.66x = 46,603,243.19
  5. Step 5: Solve for x
    x = 46,603,243.19/7,200.66
  6. Step 6: Final answer
    x = 6,472.08

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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.