Home / 8,927.88-12,320.42-5,391.08

Finding the Fourth Proportional to 8,927.88, 12,320.42 and 5,391.08

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Solution

The fourth proportional to 8,927.88, 12,320.42 and 5,391.08 is: 7,439.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,927.88 : 12,320.42 = 5,391.08 : x
  2. Step 2: Convert to fraction form
    8,927.88/12,320.42 = 5,391.08/x
  3. Step 3: Cross multiply
    8,927.88x = 12,320.42 × 5,391.08
  4. Step 4: Simplify right side
    8,927.88x = 66,420,369.85
  5. Step 5: Solve for x
    x = 66,420,369.85/8,927.88
  6. Step 6: Final answer
    x = 7,439.66

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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.