Home / 5,429.52-8,145.40-2,831.76

Finding the Fourth Proportional to 5,429.52, 8,145.40 and 2,831.76

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Solution

The fourth proportional to 5,429.52, 8,145.40 and 2,831.76 is: 4,248.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429.52 : 8,145.40 = 2,831.76 : x
  2. Step 2: Convert to fraction form
    5,429.52/8,145.40 = 2,831.76/x
  3. Step 3: Cross multiply
    5,429.52x = 8,145.40 × 2,831.76
  4. Step 4: Simplify right side
    5,429.52x = 23,065,817.90
  5. Step 5: Solve for x
    x = 23,065,817.90/5,429.52
  6. Step 6: Final answer
    x = 4,248.22

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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.