Home / 5,158.11-7,118.57-2,889.65

Finding the Fourth Proportional to 5,158.11, 7,118.57 and 2,889.65

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Solution

The fourth proportional to 5,158.11, 7,118.57 and 2,889.65 is: 3,987.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.11 : 7,118.57 = 2,889.65 : x
  2. Step 2: Convert to fraction form
    5,158.11/7,118.57 = 2,889.65/x
  3. Step 3: Cross multiply
    5,158.11x = 7,118.57 × 2,889.65
  4. Step 4: Simplify right side
    5,158.11x = 20,570,200.82
  5. Step 5: Solve for x
    x = 20,570,200.82/5,158.11
  6. Step 6: Final answer
    x = 3,987.93

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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.