Home / 6,279.55-8,666.98-4,155.12

Finding the Fourth Proportional to 6,279.55, 8,666.98 and 4,155.12

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Solution

The fourth proportional to 6,279.55, 8,666.98 and 4,155.12 is: 5,734.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.55 : 8,666.98 = 4,155.12 : x
  2. Step 2: Convert to fraction form
    6,279.55/8,666.98 = 4,155.12/x
  3. Step 3: Cross multiply
    6,279.55x = 8,666.98 × 4,155.12
  4. Step 4: Simplify right side
    6,279.55x = 36,012,331.55
  5. Step 5: Solve for x
    x = 36,012,331.55/6,279.55
  6. Step 6: Final answer
    x = 5,734.86

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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.