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Finding the Fourth Proportional to 7,952.76, 10,971.21 and 5,119.12

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Solution

The fourth proportional to 7,952.76, 10,971.21 and 5,119.12 is: 7,062.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,952.76 : 10,971.21 = 5,119.12 : x
  2. Step 2: Convert to fraction form
    7,952.76/10,971.21 = 5,119.12/x
  3. Step 3: Cross multiply
    7,952.76x = 10,971.21 × 5,119.12
  4. Step 4: Simplify right side
    7,952.76x = 56,162,913.11
  5. Step 5: Solve for x
    x = 56,162,913.11/7,952.76
  6. Step 6: Final answer
    x = 7,062.07

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Half scale
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Double scale
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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.