Home / 8,870.78-13,312.20-3,676.70

Finding the Fourth Proportional to 8,870.78, 13,312.20 and 3,676.70

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Solution

The fourth proportional to 8,870.78, 13,312.20 and 3,676.70 is: 5,517.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,870.78 : 13,312.20 = 3,676.70 : x
  2. Step 2: Convert to fraction form
    8,870.78/13,312.20 = 3,676.70/x
  3. Step 3: Cross multiply
    8,870.78x = 13,312.20 × 3,676.70
  4. Step 4: Simplify right side
    8,870.78x = 48,944,965.74
  5. Step 5: Solve for x
    x = 48,944,965.74/8,870.78
  6. Step 6: Final answer
    x = 5,517.55

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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.