Home / 1,439.22-2,156.94-1,277.22

Finding the Fourth Proportional to 1,439.22, 2,156.94 and 1,277.22

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Solution

The fourth proportional to 1,439.22, 2,156.94 and 1,277.22 is: 1,914.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.22 : 2,156.94 = 1,277.22 : x
  2. Step 2: Convert to fraction form
    1,439.22/2,156.94 = 1,277.22/x
  3. Step 3: Cross multiply
    1,439.22x = 2,156.94 × 1,277.22
  4. Step 4: Simplify right side
    1,439.22x = 2,754,886.91
  5. Step 5: Solve for x
    x = 2,754,886.91/1,439.22
  6. Step 6: Final answer
    x = 1,914.15

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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.