Home / 8,790.40-13,177.12-2,943.76

Finding the Fourth Proportional to 8,790.40, 13,177.12 and 2,943.76

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Solution

The fourth proportional to 8,790.40, 13,177.12 and 2,943.76 is: 4,412.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.40 : 13,177.12 = 2,943.76 : x
  2. Step 2: Convert to fraction form
    8,790.40/13,177.12 = 2,943.76/x
  3. Step 3: Cross multiply
    8,790.40x = 13,177.12 × 2,943.76
  4. Step 4: Simplify right side
    8,790.40x = 38,790,278.77
  5. Step 5: Solve for x
    x = 38,790,278.77/8,790.40
  6. Step 6: Final answer
    x = 4,412.80

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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.