Home / 4,142.46-6,213.69-1,220.76

Finding the Fourth Proportional to 4,142.46, 6,213.69 and 1,220.76

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Solution

The fourth proportional to 4,142.46, 6,213.69 and 1,220.76 is: 1,831.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,142.46 : 6,213.69 = 1,220.76 : x
  2. Step 2: Convert to fraction form
    4,142.46/6,213.69 = 1,220.76/x
  3. Step 3: Cross multiply
    4,142.46x = 6,213.69 × 1,220.76
  4. Step 4: Simplify right side
    4,142.46x = 7,585,424.20
  5. Step 5: Solve for x
    x = 7,585,424.20/4,142.46
  6. Step 6: Final answer
    x = 1,831.14

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.