Home / 8,429.28-12,643.56-2,883.12

Finding the Fourth Proportional to 8,429.28, 12,643.56 and 2,883.12

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Solution

The fourth proportional to 8,429.28, 12,643.56 and 2,883.12 is: 4,324.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.28 : 12,643.56 = 2,883.12 : x
  2. Step 2: Convert to fraction form
    8,429.28/12,643.56 = 2,883.12/x
  3. Step 3: Cross multiply
    8,429.28x = 12,643.56 × 2,883.12
  4. Step 4: Simplify right side
    8,429.28x = 36,452,900.71
  5. Step 5: Solve for x
    x = 36,452,900.71/8,429.28
  6. Step 6: Final answer
    x = 4,324.56

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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.