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Finding the Fourth Proportional to 7,321, 10,103 and 4,177.12

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Solution

The fourth proportional to 7,321, 10,103 and 4,177.12 is: 5,764.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321 : 10,103 = 4,177.12 : x
  2. Step 2: Convert to fraction form
    7,321/10,103 = 4,177.12/x
  3. Step 3: Cross multiply
    7,321x = 10,103 × 4,177.12
  4. Step 4: Simplify right side
    7,321x = 42,201,443.36
  5. Step 5: Solve for x
    x = 42,201,443.36/7,321
  6. Step 6: Final answer
    x = 5,764.44

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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.