Home / 5,330.31-7,355.84-2,972.40

Finding the Fourth Proportional to 5,330.31, 7,355.84 and 2,972.40

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Solution

The fourth proportional to 5,330.31, 7,355.84 and 2,972.40 is: 4,101.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,330.31 : 7,355.84 = 2,972.40 : x
  2. Step 2: Convert to fraction form
    5,330.31/7,355.84 = 2,972.40/x
  3. Step 3: Cross multiply
    5,330.31x = 7,355.84 × 2,972.40
  4. Step 4: Simplify right side
    5,330.31x = 21,864,498.82
  5. Step 5: Solve for x
    x = 21,864,498.82/5,330.31
  6. Step 6: Final answer
    x = 4,101.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.