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Finding the Fourth Proportional to 9,213.59, 12,715.28 and 6,971.58

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Solution

The fourth proportional to 9,213.59, 12,715.28 and 6,971.58 is: 9,621.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,213.59 : 12,715.28 = 6,971.58 : x
  2. Step 2: Convert to fraction form
    9,213.59/12,715.28 = 6,971.58/x
  3. Step 3: Cross multiply
    9,213.59x = 12,715.28 × 6,971.58
  4. Step 4: Simplify right side
    9,213.59x = 88,645,609.17
  5. Step 5: Solve for x
    x = 88,645,609.17/9,213.59
  6. Step 6: Final answer
    x = 9,621.18

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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.