Home / 7,320.60-10,972.80-3,159.90

Finding the Fourth Proportional to 7,320.60, 10,972.80 and 3,159.90

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Solution

The fourth proportional to 7,320.60, 10,972.80 and 3,159.90 is: 4,736.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.60 : 10,972.80 = 3,159.90 : x
  2. Step 2: Convert to fraction form
    7,320.60/10,972.80 = 3,159.90/x
  3. Step 3: Cross multiply
    7,320.60x = 10,972.80 × 3,159.90
  4. Step 4: Simplify right side
    7,320.60x = 34,672,950.72
  5. Step 5: Solve for x
    x = 34,672,950.72/7,320.60
  6. Step 6: Final answer
    x = 4,736.35

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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.