Home / 2,266.84-3,128.19-1,272.10

Finding the Fourth Proportional to 2,266.84, 3,128.19 and 1,272.10

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Solution

The fourth proportional to 2,266.84, 3,128.19 and 1,272.10 is: 1,755.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,266.84 : 3,128.19 = 1,272.10 : x
  2. Step 2: Convert to fraction form
    2,266.84/3,128.19 = 1,272.10/x
  3. Step 3: Cross multiply
    2,266.84x = 3,128.19 × 1,272.10
  4. Step 4: Simplify right side
    2,266.84x = 3,979,370.50
  5. Step 5: Solve for x
    x = 3,979,370.50/2,266.84
  6. Step 6: Final answer
    x = 1,755.47

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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.