Home / 1,447.19-2,160.30-1,272.02

Finding the Fourth Proportional to 1,447.19, 2,160.30 and 1,272.02

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Solution

The fourth proportional to 1,447.19, 2,160.30 and 1,272.02 is: 1,898.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.19 : 2,160.30 = 1,272.02 : x
  2. Step 2: Convert to fraction form
    1,447.19/2,160.30 = 1,272.02/x
  3. Step 3: Cross multiply
    1,447.19x = 2,160.30 × 1,272.02
  4. Step 4: Simplify right side
    1,447.19x = 2,747,950.21
  5. Step 5: Solve for x
    x = 2,747,950.21/1,447.19
  6. Step 6: Final answer
    x = 1,898.82

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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.