Home / 7,142.13-9,856.34-3,998.52

Finding the Fourth Proportional to 7,142.13, 9,856.34 and 3,998.52

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Solution

The fourth proportional to 7,142.13, 9,856.34 and 3,998.52 is: 5,518.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.13 : 9,856.34 = 3,998.52 : x
  2. Step 2: Convert to fraction form
    7,142.13/9,856.34 = 3,998.52/x
  3. Step 3: Cross multiply
    7,142.13x = 9,856.34 × 3,998.52
  4. Step 4: Simplify right side
    7,142.13x = 39,410,772.62
  5. Step 5: Solve for x
    x = 39,410,772.62/7,142.13
  6. Step 6: Final answer
    x = 5,518.07

Related Problems

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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.