Home / 3,108.16-4,289.52-1,781.92

Finding the Fourth Proportional to 3,108.16, 4,289.52 and 1,781.92

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Solution

The fourth proportional to 3,108.16, 4,289.52 and 1,781.92 is: 2,459.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.16 : 4,289.52 = 1,781.92 : x
  2. Step 2: Convert to fraction form
    3,108.16/4,289.52 = 1,781.92/x
  3. Step 3: Cross multiply
    3,108.16x = 4,289.52 × 1,781.92
  4. Step 4: Simplify right side
    3,108.16x = 7,643,581.48
  5. Step 5: Solve for x
    x = 7,643,581.48/3,108.16
  6. Step 6: Final answer
    x = 2,459.20

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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.