Home / 3,931.40-5,427.86-2,440.92

Finding the Fourth Proportional to 3,931.40, 5,427.86 and 2,440.92

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Solution

The fourth proportional to 3,931.40, 5,427.86 and 2,440.92 is: 3,370.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.40 : 5,427.86 = 2,440.92 : x
  2. Step 2: Convert to fraction form
    3,931.40/5,427.86 = 2,440.92/x
  3. Step 3: Cross multiply
    3,931.40x = 5,427.86 × 2,440.92
  4. Step 4: Simplify right side
    3,931.40x = 13,248,972.03
  5. Step 5: Solve for x
    x = 13,248,972.03/3,931.40
  6. Step 6: Final answer
    x = 3,370.04

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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.