Home / 3,382.40-5,071.80-1,432.40

Finding the Fourth Proportional to 3,382.40, 5,071.80 and 1,432.40

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Solution

The fourth proportional to 3,382.40, 5,071.80 and 1,432.40 is: 2,147.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,382.40 : 5,071.80 = 1,432.40 : x
  2. Step 2: Convert to fraction form
    3,382.40/5,071.80 = 1,432.40/x
  3. Step 3: Cross multiply
    3,382.40x = 5,071.80 × 1,432.40
  4. Step 4: Simplify right side
    3,382.40x = 7,264,846.32
  5. Step 5: Solve for x
    x = 7,264,846.32/3,382.40
  6. Step 6: Final answer
    x = 2,147.84

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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.