Home / 7,320.78-10,103.40-4,177.44

Finding the Fourth Proportional to 7,320.78, 10,103.40 and 4,177.44

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Solution

The fourth proportional to 7,320.78, 10,103.40 and 4,177.44 is: 5,765.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.78 : 10,103.40 = 4,177.44 : x
  2. Step 2: Convert to fraction form
    7,320.78/10,103.40 = 4,177.44/x
  3. Step 3: Cross multiply
    7,320.78x = 10,103.40 × 4,177.44
  4. Step 4: Simplify right side
    7,320.78x = 42,206,347.30
  5. Step 5: Solve for x
    x = 42,206,347.30/7,320.78
  6. Step 6: Final answer
    x = 5,765.28

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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.