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Finding the Fourth Proportional to 6,515.04, 8,978.70 and 4,626.71

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Solution

The fourth proportional to 6,515.04, 8,978.70 and 4,626.71 is: 6,376.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.04 : 8,978.70 = 4,626.71 : x
  2. Step 2: Convert to fraction form
    6,515.04/8,978.70 = 4,626.71/x
  3. Step 3: Cross multiply
    6,515.04x = 8,978.70 × 4,626.71
  4. Step 4: Simplify right side
    6,515.04x = 41,541,841.08
  5. Step 5: Solve for x
    x = 41,541,841.08/6,515.04
  6. Step 6: Final answer
    x = 6,376.30

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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.