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Finding the Fourth Proportional to 10,970.08, 15,134.88 and 7,612

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Solution

The fourth proportional to 10,970.08, 15,134.88 and 7,612 is: 10,501.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,970.08 : 15,134.88 = 7,612 : x
  2. Step 2: Convert to fraction form
    10,970.08/15,134.88 = 7,612/x
  3. Step 3: Cross multiply
    10,970.08x = 15,134.88 × 7,612
  4. Step 4: Simplify right side
    10,970.08x = 115,206,706.56
  5. Step 5: Solve for x
    x = 115,206,706.56/10,970.08
  6. Step 6: Final answer
    x = 10,501.90

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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.