Home / 3,902.32-5,386.72-2,642.76

Finding the Fourth Proportional to 3,902.32, 5,386.72 and 2,642.76

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Solution

The fourth proportional to 3,902.32, 5,386.72 and 2,642.76 is: 3,648.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.32 : 5,386.72 = 2,642.76 : x
  2. Step 2: Convert to fraction form
    3,902.32/5,386.72 = 2,642.76/x
  3. Step 3: Cross multiply
    3,902.32x = 5,386.72 × 2,642.76
  4. Step 4: Simplify right side
    3,902.32x = 14,235,808.15
  5. Step 5: Solve for x
    x = 14,235,808.15/3,902.32
  6. Step 6: Final answer
    x = 3,648.04

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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.