Home / 8,418.70-11,625.15-5,280.30

Finding the Fourth Proportional to 8,418.70, 11,625.15 and 5,280.30

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Solution

The fourth proportional to 8,418.70, 11,625.15 and 5,280.30 is: 7,291.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.70 : 11,625.15 = 5,280.30 : x
  2. Step 2: Convert to fraction form
    8,418.70/11,625.15 = 5,280.30/x
  3. Step 3: Cross multiply
    8,418.70x = 11,625.15 × 5,280.30
  4. Step 4: Simplify right side
    8,418.70x = 61,384,279.55
  5. Step 5: Solve for x
    x = 61,384,279.55/8,418.70
  6. Step 6: Final answer
    x = 7,291.42

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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.