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Finding the Fourth Proportional to 8,976.53, 12,374.78 and 6,315.68

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Solution

The fourth proportional to 8,976.53, 12,374.78 and 6,315.68 is: 8,706.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.53 : 12,374.78 = 6,315.68 : x
  2. Step 2: Convert to fraction form
    8,976.53/12,374.78 = 6,315.68/x
  3. Step 3: Cross multiply
    8,976.53x = 12,374.78 × 6,315.68
  4. Step 4: Simplify right side
    8,976.53x = 78,155,057.10
  5. Step 5: Solve for x
    x = 78,155,057.10/8,976.53
  6. Step 6: Final answer
    x = 8,706.60

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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.