Home / 8,555.28-12,831.36-2,315.76

Finding the Fourth Proportional to 8,555.28, 12,831.36 and 2,315.76

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Solution

The fourth proportional to 8,555.28, 12,831.36 and 2,315.76 is: 3,473.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,555.28 : 12,831.36 = 2,315.76 : x
  2. Step 2: Convert to fraction form
    8,555.28/12,831.36 = 2,315.76/x
  3. Step 3: Cross multiply
    8,555.28x = 12,831.36 × 2,315.76
  4. Step 4: Simplify right side
    8,555.28x = 29,714,350.23
  5. Step 5: Solve for x
    x = 29,714,350.23/8,555.28
  6. Step 6: Final answer
    x = 3,473.22

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1.5x scale

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.