Home / 5,407.50-8,108.60-2,119.71

Finding the Fourth Proportional to 5,407.50, 8,108.60 and 2,119.71

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Solution

The fourth proportional to 5,407.50, 8,108.60 and 2,119.71 is: 3,178.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,407.50 : 8,108.60 = 2,119.71 : x
  2. Step 2: Convert to fraction form
    5,407.50/8,108.60 = 2,119.71/x
  3. Step 3: Cross multiply
    5,407.50x = 8,108.60 × 2,119.71
  4. Step 4: Simplify right side
    5,407.50x = 17,187,869.91
  5. Step 5: Solve for x
    x = 17,187,869.91/5,407.50
  6. Step 6: Final answer
    x = 3,178.52

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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.