Home / 3,150.14-4,343.18-1,970.78

Finding the Fourth Proportional to 3,150.14, 4,343.18 and 1,970.78

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Solution

The fourth proportional to 3,150.14, 4,343.18 and 1,970.78 is: 2,717.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.14 : 4,343.18 = 1,970.78 : x
  2. Step 2: Convert to fraction form
    3,150.14/4,343.18 = 1,970.78/x
  3. Step 3: Cross multiply
    3,150.14x = 4,343.18 × 1,970.78
  4. Step 4: Simplify right side
    3,150.14x = 8,559,452.28
  5. Step 5: Solve for x
    x = 8,559,452.28/3,150.14
  6. Step 6: Final answer
    x = 2,717.17

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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.