Home / 7,972.80-11,948.40-5,332.80

Finding the Fourth Proportional to 7,972.80, 11,948.40 and 5,332.80

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Solution

The fourth proportional to 7,972.80, 11,948.40 and 5,332.80 is: 7,991.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.80 : 11,948.40 = 5,332.80 : x
  2. Step 2: Convert to fraction form
    7,972.80/11,948.40 = 5,332.80/x
  3. Step 3: Cross multiply
    7,972.80x = 11,948.40 × 5,332.80
  4. Step 4: Simplify right side
    7,972.80x = 63,718,427.52
  5. Step 5: Solve for x
    x = 63,718,427.52/7,972.80
  6. Step 6: Final answer
    x = 7,991.98

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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.