Home / 3,937.30-5,905.56-1,340.20

Finding the Fourth Proportional to 3,937.30, 5,905.56 and 1,340.20

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Solution

The fourth proportional to 3,937.30, 5,905.56 and 1,340.20 is: 2,010.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.30 : 5,905.56 = 1,340.20 : x
  2. Step 2: Convert to fraction form
    3,937.30/5,905.56 = 1,340.20/x
  3. Step 3: Cross multiply
    3,937.30x = 5,905.56 × 1,340.20
  4. Step 4: Simplify right side
    3,937.30x = 7,914,631.51
  5. Step 5: Solve for x
    x = 7,914,631.51/3,937.30
  6. Step 6: Final answer
    x = 2,010.17

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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.