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Finding the Fourth Proportional to 8,656.70, 12,988.46 and 4,499.32

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Solution

The fourth proportional to 8,656.70, 12,988.46 and 4,499.32 is: 6,750.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.70 : 12,988.46 = 4,499.32 : x
  2. Step 2: Convert to fraction form
    8,656.70/12,988.46 = 4,499.32/x
  3. Step 3: Cross multiply
    8,656.70x = 12,988.46 × 4,499.32
  4. Step 4: Simplify right side
    8,656.70x = 58,439,237.85
  5. Step 5: Solve for x
    x = 58,439,237.85/8,656.70
  6. Step 6: Final answer
    x = 6,750.75

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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.