Home / 3,920.16-5,409.12-2,426.88

Finding the Fourth Proportional to 3,920.16, 5,409.12 and 2,426.88

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Solution

The fourth proportional to 3,920.16, 5,409.12 and 2,426.88 is: 3,348.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.16 : 5,409.12 = 2,426.88 : x
  2. Step 2: Convert to fraction form
    3,920.16/5,409.12 = 2,426.88/x
  3. Step 3: Cross multiply
    3,920.16x = 5,409.12 × 2,426.88
  4. Step 4: Simplify right side
    3,920.16x = 13,127,285.15
  5. Step 5: Solve for x
    x = 13,127,285.15/3,920.16
  6. Step 6: Final answer
    x = 3,348.66

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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.