Home / 1,647.60-2,270.91-1,249.13

Finding the Fourth Proportional to 1,647.60, 2,270.91 and 1,249.13

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Solution

The fourth proportional to 1,647.60, 2,270.91 and 1,249.13 is: 1,721.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.60 : 2,270.91 = 1,249.13 : x
  2. Step 2: Convert to fraction form
    1,647.60/2,270.91 = 1,249.13/x
  3. Step 3: Cross multiply
    1,647.60x = 2,270.91 × 1,249.13
  4. Step 4: Simplify right side
    1,647.60x = 2,836,650.45
  5. Step 5: Solve for x
    x = 2,836,650.45/1,647.60
  6. Step 6: Final answer
    x = 1,721.69

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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.