Home / 5,278.86-7,285.02-2,921.02

Finding the Fourth Proportional to 5,278.86, 7,285.02 and 2,921.02

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Solution

The fourth proportional to 5,278.86, 7,285.02 and 2,921.02 is: 4,031.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.86 : 7,285.02 = 2,921.02 : x
  2. Step 2: Convert to fraction form
    5,278.86/7,285.02 = 2,921.02/x
  3. Step 3: Cross multiply
    5,278.86x = 7,285.02 × 2,921.02
  4. Step 4: Simplify right side
    5,278.86x = 21,279,689.12
  5. Step 5: Solve for x
    x = 21,279,689.12/5,278.86
  6. Step 6: Final answer
    x = 4,031.11

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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.