Home / 7,877.60-11,815.28-3,133.76

Finding the Fourth Proportional to 7,877.60, 11,815.28 and 3,133.76

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Solution

The fourth proportional to 7,877.60, 11,815.28 and 3,133.76 is: 4,700.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.60 : 11,815.28 = 3,133.76 : x
  2. Step 2: Convert to fraction form
    7,877.60/11,815.28 = 3,133.76/x
  3. Step 3: Cross multiply
    7,877.60x = 11,815.28 × 3,133.76
  4. Step 4: Simplify right side
    7,877.60x = 37,026,251.85
  5. Step 5: Solve for x
    x = 37,026,251.85/7,877.60
  6. Step 6: Final answer
    x = 4,700.19

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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.