Home / 5,247.42-7,241.80-2,889.72

Finding the Fourth Proportional to 5,247.42, 7,241.80 and 2,889.72

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Solution

The fourth proportional to 5,247.42, 7,241.80 and 2,889.72 is: 3,988.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.42 : 7,241.80 = 2,889.72 : x
  2. Step 2: Convert to fraction form
    5,247.42/7,241.80 = 2,889.72/x
  3. Step 3: Cross multiply
    5,247.42x = 7,241.80 × 2,889.72
  4. Step 4: Simplify right side
    5,247.42x = 20,926,774.30
  5. Step 5: Solve for x
    x = 20,926,774.30/5,247.42
  6. Step 6: Final answer
    x = 3,988.01

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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.