Home / 5,438.72-8,159.45-1,543.13

Finding the Fourth Proportional to 5,438.72, 8,159.45 and 1,543.13

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Solution

The fourth proportional to 5,438.72, 8,159.45 and 1,543.13 is: 2,315.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.72 : 8,159.45 = 1,543.13 : x
  2. Step 2: Convert to fraction form
    5,438.72/8,159.45 = 1,543.13/x
  3. Step 3: Cross multiply
    5,438.72x = 8,159.45 × 1,543.13
  4. Step 4: Simplify right side
    5,438.72x = 12,591,043.57
  5. Step 5: Solve for x
    x = 12,591,043.57/5,438.72
  6. Step 6: Final answer
    x = 2,315.08

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1.5x scale

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.