Home / 8,825.40-13,233.83-5,128.70

Finding the Fourth Proportional to 8,825.40, 13,233.83 and 5,128.70

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Solution

The fourth proportional to 8,825.40, 13,233.83 and 5,128.70 is: 7,690.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,825.40 : 13,233.83 = 5,128.70 : x
  2. Step 2: Convert to fraction form
    8,825.40/13,233.83 = 5,128.70/x
  3. Step 3: Cross multiply
    8,825.40x = 13,233.83 × 5,128.70
  4. Step 4: Simplify right side
    8,825.40x = 67,872,252.11
  5. Step 5: Solve for x
    x = 67,872,252.11/8,825.40
  6. Step 6: Final answer
    x = 7,690.56

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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.