Home / 8,831.60-12,188.76-5,696.90

Finding the Fourth Proportional to 8,831.60, 12,188.76 and 5,696.90

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Solution

The fourth proportional to 8,831.60, 12,188.76 and 5,696.90 is: 7,862.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,831.60 : 12,188.76 = 5,696.90 : x
  2. Step 2: Convert to fraction form
    8,831.60/12,188.76 = 5,696.90/x
  3. Step 3: Cross multiply
    8,831.60x = 12,188.76 × 5,696.90
  4. Step 4: Simplify right side
    8,831.60x = 69,438,146.84
  5. Step 5: Solve for x
    x = 69,438,146.84/8,831.60
  6. Step 6: Final answer
    x = 7,862.47

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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.