Home / 4,140.20-6,207.90-1,543.40

Finding the Fourth Proportional to 4,140.20, 6,207.90 and 1,543.40

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Solution

The fourth proportional to 4,140.20, 6,207.90 and 1,543.40 is: 2,314.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.20 : 6,207.90 = 1,543.40 : x
  2. Step 2: Convert to fraction form
    4,140.20/6,207.90 = 1,543.40/x
  3. Step 3: Cross multiply
    4,140.20x = 6,207.90 × 1,543.40
  4. Step 4: Simplify right side
    4,140.20x = 9,581,272.86
  5. Step 5: Solve for x
    x = 9,581,272.86/4,140.20
  6. Step 6: Final answer
    x = 2,314.21

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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.