Home / 5,158.97-7,119.73-2,920.87

Finding the Fourth Proportional to 5,158.97, 7,119.73 and 2,920.87

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Solution

The fourth proportional to 5,158.97, 7,119.73 and 2,920.87 is: 4,031.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.97 : 7,119.73 = 2,920.87 : x
  2. Step 2: Convert to fraction form
    5,158.97/7,119.73 = 2,920.87/x
  3. Step 3: Cross multiply
    5,158.97x = 7,119.73 × 2,920.87
  4. Step 4: Simplify right side
    5,158.97x = 20,795,805.77
  5. Step 5: Solve for x
    x = 20,795,805.77/5,158.97
  6. Step 6: Final answer
    x = 4,031.00

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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.