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Finding the Fourth Proportional to 2,275.50, 3,140.22 and 1,331.22

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Solution

The fourth proportional to 2,275.50, 3,140.22 and 1,331.22 is: 1,837.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.50 : 3,140.22 = 1,331.22 : x
  2. Step 2: Convert to fraction form
    2,275.50/3,140.22 = 1,331.22/x
  3. Step 3: Cross multiply
    2,275.50x = 3,140.22 × 1,331.22
  4. Step 4: Simplify right side
    2,275.50x = 4,180,323.67
  5. Step 5: Solve for x
    x = 4,180,323.67/2,275.50
  6. Step 6: Final answer
    x = 1,837.10

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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.