Home / 4,140-5,713.20-2,742.76

Finding the Fourth Proportional to 4,140, 5,713.20 and 2,742.76

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Solution

The fourth proportional to 4,140, 5,713.20 and 2,742.76 is: 3,785.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140 : 5,713.20 = 2,742.76 : x
  2. Step 2: Convert to fraction form
    4,140/5,713.20 = 2,742.76/x
  3. Step 3: Cross multiply
    4,140x = 5,713.20 × 2,742.76
  4. Step 4: Simplify right side
    4,140x = 15,669,936.43
  5. Step 5: Solve for x
    x = 15,669,936.43/4,140
  6. Step 6: Final answer
    x = 3,785.01

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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.