Home / 1,831.20-2,527.20-1,132.80

Finding the Fourth Proportional to 1,831.20, 2,527.20 and 1,132.80

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Solution

The fourth proportional to 1,831.20, 2,527.20 and 1,132.80 is: 1,563.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.20 : 2,527.20 = 1,132.80 : x
  2. Step 2: Convert to fraction form
    1,831.20/2,527.20 = 1,132.80/x
  3. Step 3: Cross multiply
    1,831.20x = 2,527.20 × 1,132.80
  4. Step 4: Simplify right side
    1,831.20x = 2,862,812.16
  5. Step 5: Solve for x
    x = 2,862,812.16/1,831.20
  6. Step 6: Final answer
    x = 1,563.35

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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.