Home / 5,661.42-7,812.61-3,143.46

Finding the Fourth Proportional to 5,661.42, 7,812.61 and 3,143.46

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Solution

The fourth proportional to 5,661.42, 7,812.61 and 3,143.46 is: 4,337.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.42 : 7,812.61 = 3,143.46 : x
  2. Step 2: Convert to fraction form
    5,661.42/7,812.61 = 3,143.46/x
  3. Step 3: Cross multiply
    5,661.42x = 7,812.61 × 3,143.46
  4. Step 4: Simplify right side
    5,661.42x = 24,558,580.11
  5. Step 5: Solve for x
    x = 24,558,580.11/5,661.42
  6. Step 6: Final answer
    x = 4,337.88

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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.