Home / 5,320.40-7,984.20-2,397.20

Finding the Fourth Proportional to 5,320.40, 7,984.20 and 2,397.20

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Solution

The fourth proportional to 5,320.40, 7,984.20 and 2,397.20 is: 3,597.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.40 : 7,984.20 = 2,397.20 : x
  2. Step 2: Convert to fraction form
    5,320.40/7,984.20 = 2,397.20/x
  3. Step 3: Cross multiply
    5,320.40x = 7,984.20 × 2,397.20
  4. Step 4: Simplify right side
    5,320.40x = 19,139,724.24
  5. Step 5: Solve for x
    x = 19,139,724.24/5,320.40
  6. Step 6: Final answer
    x = 3,597.42

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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.