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Finding the Fourth Proportional to 8,418.52, 12,619.02 and 4,715.32

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Solution

The fourth proportional to 8,418.52, 12,619.02 and 4,715.32 is: 7,068.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.52 : 12,619.02 = 4,715.32 : x
  2. Step 2: Convert to fraction form
    8,418.52/12,619.02 = 4,715.32/x
  3. Step 3: Cross multiply
    8,418.52x = 12,619.02 × 4,715.32
  4. Step 4: Simplify right side
    8,418.52x = 59,502,717.39
  5. Step 5: Solve for x
    x = 59,502,717.39/8,418.52
  6. Step 6: Final answer
    x = 7,068.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.