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Finding the Fourth Proportional to 8,656.16, 12,984.24 and 5,580.32

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Solution

The fourth proportional to 8,656.16, 12,984.24 and 5,580.32 is: 8,370.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.16 : 12,984.24 = 5,580.32 : x
  2. Step 2: Convert to fraction form
    8,656.16/12,984.24 = 5,580.32/x
  3. Step 3: Cross multiply
    8,656.16x = 12,984.24 × 5,580.32
  4. Step 4: Simplify right side
    8,656.16x = 72,456,214.16
  5. Step 5: Solve for x
    x = 72,456,214.16/8,656.16
  6. Step 6: Final answer
    x = 8,370.48

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Similar ratio
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1.5x scale

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.