Home / 1,440.78-2,170.03-1,339.38

Finding the Fourth Proportional to 1,440.78, 2,170.03 and 1,339.38

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Solution

The fourth proportional to 1,440.78, 2,170.03 and 1,339.38 is: 2,017.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.78 : 2,170.03 = 1,339.38 : x
  2. Step 2: Convert to fraction form
    1,440.78/2,170.03 = 1,339.38/x
  3. Step 3: Cross multiply
    1,440.78x = 2,170.03 × 1,339.38
  4. Step 4: Simplify right side
    1,440.78x = 2,906,488.08
  5. Step 5: Solve for x
    x = 2,906,488.08/1,440.78
  6. Step 6: Final answer
    x = 2,017.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.