Home / 2,275.16-3,138.41-1,435.56

Finding the Fourth Proportional to 2,275.16, 3,138.41 and 1,435.56

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Solution

The fourth proportional to 2,275.16, 3,138.41 and 1,435.56 is: 1,980.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.16 : 3,138.41 = 1,435.56 : x
  2. Step 2: Convert to fraction form
    2,275.16/3,138.41 = 1,435.56/x
  3. Step 3: Cross multiply
    2,275.16x = 3,138.41 × 1,435.56
  4. Step 4: Simplify right side
    2,275.16x = 4,505,368.68
  5. Step 5: Solve for x
    x = 4,505,368.68/2,275.16
  6. Step 6: Final answer
    x = 1,980.25

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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.