Home / 5,247.40-7,241.16-2,889.40

Finding the Fourth Proportional to 5,247.40, 7,241.16 and 2,889.40

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Solution

The fourth proportional to 5,247.40, 7,241.16 and 2,889.40 is: 3,987.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.40 : 7,241.16 = 2,889.40 : x
  2. Step 2: Convert to fraction form
    5,247.40/7,241.16 = 2,889.40/x
  3. Step 3: Cross multiply
    5,247.40x = 7,241.16 × 2,889.40
  4. Step 4: Simplify right side
    5,247.40x = 20,922,607.70
  5. Step 5: Solve for x
    x = 20,922,607.70/5,247.40
  6. Step 6: Final answer
    x = 3,987.23

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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.