Home / 5,158.15-7,118.25-2,800.31

Finding the Fourth Proportional to 5,158.15, 7,118.25 and 2,800.31

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Solution

The fourth proportional to 5,158.15, 7,118.25 and 2,800.31 is: 3,864.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.15 : 7,118.25 = 2,800.31 : x
  2. Step 2: Convert to fraction form
    5,158.15/7,118.25 = 2,800.31/x
  3. Step 3: Cross multiply
    5,158.15x = 7,118.25 × 2,800.31
  4. Step 4: Simplify right side
    5,158.15x = 19,933,260.57
  5. Step 5: Solve for x
    x = 19,933,260.57/5,158.15
  6. Step 6: Final answer
    x = 3,864.42

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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.