Home / 3,911.04-5,397.36-2,142.63

Finding the Fourth Proportional to 3,911.04, 5,397.36 and 2,142.63

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Solution

The fourth proportional to 3,911.04, 5,397.36 and 2,142.63 is: 2,956.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.04 : 5,397.36 = 2,142.63 : x
  2. Step 2: Convert to fraction form
    3,911.04/5,397.36 = 2,142.63/x
  3. Step 3: Cross multiply
    3,911.04x = 5,397.36 × 2,142.63
  4. Step 4: Simplify right side
    3,911.04x = 11,564,545.46
  5. Step 5: Solve for x
    x = 11,564,545.46/3,911.04
  6. Step 6: Final answer
    x = 2,956.90

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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.