Home / 3,715.13-5,126.69-2,143.13

Finding the Fourth Proportional to 3,715.13, 5,126.69 and 2,143.13

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Solution

The fourth proportional to 3,715.13, 5,126.69 and 2,143.13 is: 2,957.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.13 : 5,126.69 = 2,143.13 : x
  2. Step 2: Convert to fraction form
    3,715.13/5,126.69 = 2,143.13/x
  3. Step 3: Cross multiply
    3,715.13x = 5,126.69 × 2,143.13
  4. Step 4: Simplify right side
    3,715.13x = 10,987,142.86
  5. Step 5: Solve for x
    x = 10,987,142.86/3,715.13
  6. Step 6: Final answer
    x = 2,957.40

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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.