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Finding the Fourth Proportional to 8,647.52, 12,971.28 and 5,588.96

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Solution

The fourth proportional to 8,647.52, 12,971.28 and 5,588.96 is: 8,383.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.52 : 12,971.28 = 5,588.96 : x
  2. Step 2: Convert to fraction form
    8,647.52/12,971.28 = 5,588.96/x
  3. Step 3: Cross multiply
    8,647.52x = 12,971.28 × 5,588.96
  4. Step 4: Simplify right side
    8,647.52x = 72,495,965.07
  5. Step 5: Solve for x
    x = 72,495,965.07/8,647.52
  6. Step 6: Final answer
    x = 8,383.44

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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.