Home / 7,152.31-10,728.47-2,220.63

Finding the Fourth Proportional to 7,152.31, 10,728.47 and 2,220.63

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Solution

The fourth proportional to 7,152.31, 10,728.47 and 2,220.63 is: 3,330.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,152.31 : 10,728.47 = 2,220.63 : x
  2. Step 2: Convert to fraction form
    7,152.31/10,728.47 = 2,220.63/x
  3. Step 3: Cross multiply
    7,152.31x = 10,728.47 × 2,220.63
  4. Step 4: Simplify right side
    7,152.31x = 23,823,962.34
  5. Step 5: Solve for x
    x = 23,823,962.34/7,152.31
  6. Step 6: Final answer
    x = 3,330.95

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.