Home / 5,279.55-7,285.54-2,889.48

Finding the Fourth Proportional to 5,279.55, 7,285.54 and 2,889.48

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Solution

The fourth proportional to 5,279.55, 7,285.54 and 2,889.48 is: 3,987.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.55 : 7,285.54 = 2,889.48 : x
  2. Step 2: Convert to fraction form
    5,279.55/7,285.54 = 2,889.48/x
  3. Step 3: Cross multiply
    5,279.55x = 7,285.54 × 2,889.48
  4. Step 4: Simplify right side
    5,279.55x = 21,051,422.12
  5. Step 5: Solve for x
    x = 21,051,422.12/5,279.55
  6. Step 6: Final answer
    x = 3,987.35

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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.