Home / 8,488.80-12,729.96-3,557.12

Finding the Fourth Proportional to 8,488.80, 12,729.96 and 3,557.12

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Solution

The fourth proportional to 8,488.80, 12,729.96 and 3,557.12 is: 5,334.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.80 : 12,729.96 = 3,557.12 : x
  2. Step 2: Convert to fraction form
    8,488.80/12,729.96 = 3,557.12/x
  3. Step 3: Cross multiply
    8,488.80x = 12,729.96 × 3,557.12
  4. Step 4: Simplify right side
    8,488.80x = 45,281,931.67
  5. Step 5: Solve for x
    x = 45,281,931.67/8,488.80
  6. Step 6: Final answer
    x = 5,334.31

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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.