Home / 2,303.38-3,178.67-1,255.45

Finding the Fourth Proportional to 2,303.38, 3,178.67 and 1,255.45

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Solution

The fourth proportional to 2,303.38, 3,178.67 and 1,255.45 is: 1,732.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,303.38 : 3,178.67 = 1,255.45 : x
  2. Step 2: Convert to fraction form
    2,303.38/3,178.67 = 1,255.45/x
  3. Step 3: Cross multiply
    2,303.38x = 3,178.67 × 1,255.45
  4. Step 4: Simplify right side
    2,303.38x = 3,990,661.25
  5. Step 5: Solve for x
    x = 3,990,661.25/2,303.38
  6. Step 6: Final answer
    x = 1,732.52

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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.