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Finding the Fourth Proportional to 6,515.68, 9,051.92 and 6,455.04

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Solution

The fourth proportional to 6,515.68, 9,051.92 and 6,455.04 is: 8,967.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.68 : 9,051.92 = 6,455.04 : x
  2. Step 2: Convert to fraction form
    6,515.68/9,051.92 = 6,455.04/x
  3. Step 3: Cross multiply
    6,515.68x = 9,051.92 × 6,455.04
  4. Step 4: Simplify right side
    6,515.68x = 58,430,505.68
  5. Step 5: Solve for x
    x = 58,430,505.68/6,515.68
  6. Step 6: Final answer
    x = 8,967.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.