Home / 2,303.16-3,178.40-1,255.28

Finding the Fourth Proportional to 2,303.16, 3,178.40 and 1,255.28

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Solution

The fourth proportional to 2,303.16, 3,178.40 and 1,255.28 is: 1,732.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,303.16 : 3,178.40 = 1,255.28 : x
  2. Step 2: Convert to fraction form
    2,303.16/3,178.40 = 1,255.28/x
  3. Step 3: Cross multiply
    2,303.16x = 3,178.40 × 1,255.28
  4. Step 4: Simplify right side
    2,303.16x = 3,989,781.95
  5. Step 5: Solve for x
    x = 3,989,781.95/2,303.16
  6. Step 6: Final answer
    x = 1,732.31

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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.