Home / 5,247.30-7,241.40-2,889.59

Finding the Fourth Proportional to 5,247.30, 7,241.40 and 2,889.59

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Solution

The fourth proportional to 5,247.30, 7,241.40 and 2,889.59 is: 3,987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.30 : 7,241.40 = 2,889.59 : x
  2. Step 2: Convert to fraction form
    5,247.30/7,241.40 = 2,889.59/x
  3. Step 3: Cross multiply
    5,247.30x = 7,241.40 × 2,889.59
  4. Step 4: Simplify right side
    5,247.30x = 20,924,640.82
  5. Step 5: Solve for x
    x = 20,924,640.82/5,247.30
  6. Step 6: Final answer
    x = 3,987.70

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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.