Home / 1,443.79-2,156.45-1,249.39

Finding the Fourth Proportional to 1,443.79, 2,156.45 and 1,249.39

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Solution

The fourth proportional to 1,443.79, 2,156.45 and 1,249.39 is: 1,866.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443.79 : 2,156.45 = 1,249.39 : x
  2. Step 2: Convert to fraction form
    1,443.79/2,156.45 = 1,249.39/x
  3. Step 3: Cross multiply
    1,443.79x = 2,156.45 × 1,249.39
  4. Step 4: Simplify right side
    1,443.79x = 2,694,247.07
  5. Step 5: Solve for x
    x = 2,694,247.07/1,443.79
  6. Step 6: Final answer
    x = 1,866.09

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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.