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Finding the Fourth Proportional to 8,666.64, 12,998.52 and 2,427.30

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Solution

The fourth proportional to 8,666.64, 12,998.52 and 2,427.30 is: 3,640.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.64 : 12,998.52 = 2,427.30 : x
  2. Step 2: Convert to fraction form
    8,666.64/12,998.52 = 2,427.30/x
  3. Step 3: Cross multiply
    8,666.64x = 12,998.52 × 2,427.30
  4. Step 4: Simplify right side
    8,666.64x = 31,551,307.60
  5. Step 5: Solve for x
    x = 31,551,307.60/8,666.64
  6. Step 6: Final answer
    x = 3,640.55

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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.