Home / 7,180.21-9,908.76-4,385.71

Finding the Fourth Proportional to 7,180.21, 9,908.76 and 4,385.71

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Solution

The fourth proportional to 7,180.21, 9,908.76 and 4,385.71 is: 6,052.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.21 : 9,908.76 = 4,385.71 : x
  2. Step 2: Convert to fraction form
    7,180.21/9,908.76 = 4,385.71/x
  3. Step 3: Cross multiply
    7,180.21x = 9,908.76 × 4,385.71
  4. Step 4: Simplify right side
    7,180.21x = 43,456,947.82
  5. Step 5: Solve for x
    x = 43,456,947.82/7,180.21
  6. Step 6: Final answer
    x = 6,052.32

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Half scale
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Double scale
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Similar ratio
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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.