Home / 5,132.40-7,700.40-2,211.60

Finding the Fourth Proportional to 5,132.40, 7,700.40 and 2,211.60

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Solution

The fourth proportional to 5,132.40, 7,700.40 and 2,211.60 is: 3,318.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,132.40 : 7,700.40 = 2,211.60 : x
  2. Step 2: Convert to fraction form
    5,132.40/7,700.40 = 2,211.60/x
  3. Step 3: Cross multiply
    5,132.40x = 7,700.40 × 2,211.60
  4. Step 4: Simplify right side
    5,132.40x = 17,030,204.64
  5. Step 5: Solve for x
    x = 17,030,204.64/5,132.40
  6. Step 6: Final answer
    x = 3,318.18

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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.