Home / 8,439.80-12,659.84-2,899.52

Finding the Fourth Proportional to 8,439.80, 12,659.84 and 2,899.52

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Solution

The fourth proportional to 8,439.80, 12,659.84 and 2,899.52 is: 4,349.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.80 : 12,659.84 = 2,899.52 : x
  2. Step 2: Convert to fraction form
    8,439.80/12,659.84 = 2,899.52/x
  3. Step 3: Cross multiply
    8,439.80x = 12,659.84 × 2,899.52
  4. Step 4: Simplify right side
    8,439.80x = 36,707,459.28
  5. Step 5: Solve for x
    x = 36,707,459.28/8,439.80
  6. Step 6: Final answer
    x = 4,349.33

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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.