Home / 3,655.44-5,040.12-2,856.72

Finding the Fourth Proportional to 3,655.44, 5,040.12 and 2,856.72

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Solution

The fourth proportional to 3,655.44, 5,040.12 and 2,856.72 is: 3,938.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,655.44 : 5,040.12 = 2,856.72 : x
  2. Step 2: Convert to fraction form
    3,655.44/5,040.12 = 2,856.72/x
  3. Step 3: Cross multiply
    3,655.44x = 5,040.12 × 2,856.72
  4. Step 4: Simplify right side
    3,655.44x = 14,398,211.61
  5. Step 5: Solve for x
    x = 14,398,211.61/3,655.44
  6. Step 6: Final answer
    x = 3,938.85

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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.