Home / 2,272.32-3,135.96-1,328.40

Finding the Fourth Proportional to 2,272.32, 3,135.96 and 1,328.40

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Solution

The fourth proportional to 2,272.32, 3,135.96 and 1,328.40 is: 1,833.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.32 : 3,135.96 = 1,328.40 : x
  2. Step 2: Convert to fraction form
    2,272.32/3,135.96 = 1,328.40/x
  3. Step 3: Cross multiply
    2,272.32x = 3,135.96 × 1,328.40
  4. Step 4: Simplify right side
    2,272.32x = 4,165,809.26
  5. Step 5: Solve for x
    x = 4,165,809.26/2,272.32
  6. Step 6: Final answer
    x = 1,833.28

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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.