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Finding the Fourth Proportional to 3,158.27, 4,357.08 and 1,831.49

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Solution

The fourth proportional to 3,158.27, 4,357.08 and 1,831.49 is: 2,526.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.27 : 4,357.08 = 1,831.49 : x
  2. Step 2: Convert to fraction form
    3,158.27/4,357.08 = 1,831.49/x
  3. Step 3: Cross multiply
    3,158.27x = 4,357.08 × 1,831.49
  4. Step 4: Simplify right side
    3,158.27x = 7,979,948.45
  5. Step 5: Solve for x
    x = 7,979,948.45/3,158.27
  6. Step 6: Final answer
    x = 2,526.68

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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.