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Finding the Fourth Proportional to 8,705.58, 12,013.12 and 4,929.14

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Solution

The fourth proportional to 8,705.58, 12,013.12 and 4,929.14 is: 6,801.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.58 : 12,013.12 = 4,929.14 : x
  2. Step 2: Convert to fraction form
    8,705.58/12,013.12 = 4,929.14/x
  3. Step 3: Cross multiply
    8,705.58x = 12,013.12 × 4,929.14
  4. Step 4: Simplify right side
    8,705.58x = 59,214,350.32
  5. Step 5: Solve for x
    x = 59,214,350.32/8,705.58
  6. Step 6: Final answer
    x = 6,801.88

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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.