Home / 3,129.61-4,701.71-1,831.99

Finding the Fourth Proportional to 3,129.61, 4,701.71 and 1,831.99

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Solution

The fourth proportional to 3,129.61, 4,701.71 and 1,831.99 is: 2,752.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.61 : 4,701.71 = 1,831.99 : x
  2. Step 2: Convert to fraction form
    3,129.61/4,701.71 = 1,831.99/x
  3. Step 3: Cross multiply
    3,129.61x = 4,701.71 × 1,831.99
  4. Step 4: Simplify right side
    3,129.61x = 8,613,485.70
  5. Step 5: Solve for x
    x = 8,613,485.70/3,129.61
  6. Step 6: Final answer
    x = 2,752.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.