Home / 2,275.58-3,140.20-1,331.40

Finding the Fourth Proportional to 2,275.58, 3,140.20 and 1,331.40

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Solution

The fourth proportional to 2,275.58, 3,140.20 and 1,331.40 is: 1,837.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.58 : 3,140.20 = 1,331.40 : x
  2. Step 2: Convert to fraction form
    2,275.58/3,140.20 = 1,331.40/x
  3. Step 3: Cross multiply
    2,275.58x = 3,140.20 × 1,331.40
  4. Step 4: Simplify right side
    2,275.58x = 4,180,862.28
  5. Step 5: Solve for x
    x = 4,180,862.28/2,275.58
  6. Step 6: Final answer
    x = 1,837.27

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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.