Home / 3,140.76-4,331.80-2,196.24

Finding the Fourth Proportional to 3,140.76, 4,331.80 and 2,196.24

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Solution

The fourth proportional to 3,140.76, 4,331.80 and 2,196.24 is: 3,029.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.76 : 4,331.80 = 2,196.24 : x
  2. Step 2: Convert to fraction form
    3,140.76/4,331.80 = 2,196.24/x
  3. Step 3: Cross multiply
    3,140.76x = 4,331.80 × 2,196.24
  4. Step 4: Simplify right side
    3,140.76x = 9,513,672.43
  5. Step 5: Solve for x
    x = 9,513,672.43/3,140.76
  6. Step 6: Final answer
    x = 3,029.10

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Half scale
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Double scale
Find fourth proportional to 3,141.76, 4,333.18 and 2,197.24
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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.