Home / 5,246.92-7,240.80-2,889.15

Finding the Fourth Proportional to 5,246.92, 7,240.80 and 2,889.15

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Solution

The fourth proportional to 5,246.92, 7,240.80 and 2,889.15 is: 3,987.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,246.92 : 7,240.80 = 2,889.15 : x
  2. Step 2: Convert to fraction form
    5,246.92/7,240.80 = 2,889.15/x
  3. Step 3: Cross multiply
    5,246.92x = 7,240.80 × 2,889.15
  4. Step 4: Simplify right side
    5,246.92x = 20,919,721.12
  5. Step 5: Solve for x
    x = 20,919,721.12/5,246.92
  6. Step 6: Final answer
    x = 3,987.05

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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.