Home / 2,372.72-3,275-1,378.32

Finding the Fourth Proportional to 2,372.72, 3,275 and 1,378.32

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Solution

The fourth proportional to 2,372.72, 3,275 and 1,378.32 is: 1,902.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,372.72 : 3,275 = 1,378.32 : x
  2. Step 2: Convert to fraction form
    2,372.72/3,275 = 1,378.32/x
  3. Step 3: Cross multiply
    2,372.72x = 3,275 × 1,378.32
  4. Step 4: Simplify right side
    2,372.72x = 4,513,998
  5. Step 5: Solve for x
    x = 4,513,998/2,372.72
  6. Step 6: Final answer
    x = 1,902.46

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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.