Home / 8,990.12-12,407.58-5,452.76

Finding the Fourth Proportional to 8,990.12, 12,407.58 and 5,452.76

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Solution

The fourth proportional to 8,990.12, 12,407.58 and 5,452.76 is: 7,525.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.12 : 12,407.58 = 5,452.76 : x
  2. Step 2: Convert to fraction form
    8,990.12/12,407.58 = 5,452.76/x
  3. Step 3: Cross multiply
    8,990.12x = 12,407.58 × 5,452.76
  4. Step 4: Simplify right side
    8,990.12x = 67,655,555.92
  5. Step 5: Solve for x
    x = 67,655,555.92/8,990.12
  6. Step 6: Final answer
    x = 7,525.55

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.