Home / 5,439.78-8,158.59-1,543.14

Finding the Fourth Proportional to 5,439.78, 8,158.59 and 1,543.14

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Solution

The fourth proportional to 5,439.78, 8,158.59 and 1,543.14 is: 2,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.78 : 8,158.59 = 1,543.14 : x
  2. Step 2: Convert to fraction form
    5,439.78/8,158.59 = 1,543.14/x
  3. Step 3: Cross multiply
    5,439.78x = 8,158.59 × 1,543.14
  4. Step 4: Simplify right side
    5,439.78x = 12,589,846.57
  5. Step 5: Solve for x
    x = 12,589,846.57/5,439.78
  6. Step 6: Final answer
    x = 2,314.40

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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.