Home / 5,377.12-8,065.67-1,679.72

Finding the Fourth Proportional to 5,377.12, 8,065.67 and 1,679.72

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Solution

The fourth proportional to 5,377.12, 8,065.67 and 1,679.72 is: 2,519.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.12 : 8,065.67 = 1,679.72 : x
  2. Step 2: Convert to fraction form
    5,377.12/8,065.67 = 1,679.72/x
  3. Step 3: Cross multiply
    5,377.12x = 8,065.67 × 1,679.72
  4. Step 4: Simplify right side
    5,377.12x = 13,548,018.49
  5. Step 5: Solve for x
    x = 13,548,018.49/5,377.12
  6. Step 6: Final answer
    x = 2,519.57

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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.