Home / 3,750.60-5,174.88-2,688.15

Finding the Fourth Proportional to 3,750.60, 5,174.88 and 2,688.15

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Solution

The fourth proportional to 3,750.60, 5,174.88 and 2,688.15 is: 3,708.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,750.60 : 5,174.88 = 2,688.15 : x
  2. Step 2: Convert to fraction form
    3,750.60/5,174.88 = 2,688.15/x
  3. Step 3: Cross multiply
    3,750.60x = 5,174.88 × 2,688.15
  4. Step 4: Simplify right side
    3,750.60x = 13,910,853.67
  5. Step 5: Solve for x
    x = 13,910,853.67/3,750.60
  6. Step 6: Final answer
    x = 3,708.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.