Home / 2,831.76-3,898.13-2,456.53

Finding the Fourth Proportional to 2,831.76, 3,898.13 and 2,456.53

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Solution

The fourth proportional to 2,831.76, 3,898.13 and 2,456.53 is: 3,381.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.76 : 3,898.13 = 2,456.53 : x
  2. Step 2: Convert to fraction form
    2,831.76/3,898.13 = 2,456.53/x
  3. Step 3: Cross multiply
    2,831.76x = 3,898.13 × 2,456.53
  4. Step 4: Simplify right side
    2,831.76x = 9,575,851.26
  5. Step 5: Solve for x
    x = 9,575,851.26/2,831.76
  6. Step 6: Final answer
    x = 3,381.59

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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.