Home / 5,311.85-7,330.40-2,889.24

Finding the Fourth Proportional to 5,311.85, 7,330.40 and 2,889.24

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Solution

The fourth proportional to 5,311.85, 7,330.40 and 2,889.24 is: 3,987.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.85 : 7,330.40 = 2,889.24 : x
  2. Step 2: Convert to fraction form
    5,311.85/7,330.40 = 2,889.24/x
  3. Step 3: Cross multiply
    5,311.85x = 7,330.40 × 2,889.24
  4. Step 4: Simplify right side
    5,311.85x = 21,179,248.24
  5. Step 5: Solve for x
    x = 21,179,248.24/5,311.85
  6. Step 6: Final answer
    x = 3,987.17

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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.