Home / 5,335.20-7,362.76-2,977.78

Finding the Fourth Proportional to 5,335.20, 7,362.76 and 2,977.78

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Solution

The fourth proportional to 5,335.20, 7,362.76 and 2,977.78 is: 4,109.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,335.20 : 7,362.76 = 2,977.78 : x
  2. Step 2: Convert to fraction form
    5,335.20/7,362.76 = 2,977.78/x
  3. Step 3: Cross multiply
    5,335.20x = 7,362.76 × 2,977.78
  4. Step 4: Simplify right side
    5,335.20x = 21,924,679.47
  5. Step 5: Solve for x
    x = 21,924,679.47/5,335.20
  6. Step 6: Final answer
    x = 4,109.44

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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.