Home / 2,275.32-3,139.66-1,331.16

Finding the Fourth Proportional to 2,275.32, 3,139.66 and 1,331.16

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Solution

The fourth proportional to 2,275.32, 3,139.66 and 1,331.16 is: 1,836.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.32 : 3,139.66 = 1,331.16 : x
  2. Step 2: Convert to fraction form
    2,275.32/3,139.66 = 1,331.16/x
  3. Step 3: Cross multiply
    2,275.32x = 3,139.66 × 1,331.16
  4. Step 4: Simplify right side
    2,275.32x = 4,179,389.81
  5. Step 5: Solve for x
    x = 4,179,389.81/2,275.32
  6. Step 6: Final answer
    x = 1,836.84

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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.