Home / 1,378.12-2,055.17-1,301.44

Finding the Fourth Proportional to 1,378.12, 2,055.17 and 1,301.44

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Solution

The fourth proportional to 1,378.12, 2,055.17 and 1,301.44 is: 1,940.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.12 : 2,055.17 = 1,301.44 : x
  2. Step 2: Convert to fraction form
    1,378.12/2,055.17 = 1,301.44/x
  3. Step 3: Cross multiply
    1,378.12x = 2,055.17 × 1,301.44
  4. Step 4: Simplify right side
    1,378.12x = 2,674,680.44
  5. Step 5: Solve for x
    x = 2,674,680.44/1,378.12
  6. Step 6: Final answer
    x = 1,940.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.