Home / 8,780.40-13,162.14-2,933.76

Finding the Fourth Proportional to 8,780.40, 13,162.14 and 2,933.76

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Solution

The fourth proportional to 8,780.40, 13,162.14 and 2,933.76 is: 4,397.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.40 : 13,162.14 = 2,933.76 : x
  2. Step 2: Convert to fraction form
    8,780.40/13,162.14 = 2,933.76/x
  3. Step 3: Cross multiply
    8,780.40x = 13,162.14 × 2,933.76
  4. Step 4: Simplify right side
    8,780.40x = 38,614,559.85
  5. Step 5: Solve for x
    x = 38,614,559.85/8,780.40
  6. Step 6: Final answer
    x = 4,397.81

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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.