Home / 6,279.10-9,418.65-5,415.10

Finding the Fourth Proportional to 6,279.10, 9,418.65 and 5,415.10

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Solution

The fourth proportional to 6,279.10, 9,418.65 and 5,415.10 is: 8,122.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.10 : 9,418.65 = 5,415.10 : x
  2. Step 2: Convert to fraction form
    6,279.10/9,418.65 = 5,415.10/x
  3. Step 3: Cross multiply
    6,279.10x = 9,418.65 × 5,415.10
  4. Step 4: Simplify right side
    6,279.10x = 51,002,931.62
  5. Step 5: Solve for x
    x = 51,002,931.62/6,279.10
  6. Step 6: Final answer
    x = 8,122.65

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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.