Home / 7,217.29-9,960.72-4,385.12

Finding the Fourth Proportional to 7,217.29, 9,960.72 and 4,385.12

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Solution

The fourth proportional to 7,217.29, 9,960.72 and 4,385.12 is: 6,051.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,217.29 : 9,960.72 = 4,385.12 : x
  2. Step 2: Convert to fraction form
    7,217.29/9,960.72 = 4,385.12/x
  3. Step 3: Cross multiply
    7,217.29x = 9,960.72 × 4,385.12
  4. Step 4: Simplify right side
    7,217.29x = 43,678,972.16
  5. Step 5: Solve for x
    x = 43,678,972.16/7,217.29
  6. Step 6: Final answer
    x = 6,051.99

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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.