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Finding the Fourth Proportional to 7,182.96, 10,773.16 and 1,989.24

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Solution

The fourth proportional to 7,182.96, 10,773.16 and 1,989.24 is: 2,983.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182.96 : 10,773.16 = 1,989.24 : x
  2. Step 2: Convert to fraction form
    7,182.96/10,773.16 = 1,989.24/x
  3. Step 3: Cross multiply
    7,182.96x = 10,773.16 × 1,989.24
  4. Step 4: Simplify right side
    7,182.96x = 21,430,400.80
  5. Step 5: Solve for x
    x = 21,430,400.80/7,182.96
  6. Step 6: Final answer
    x = 2,983.51

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Double scale
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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.