Home / 2,376.13-3,278.99-1,328.20

Finding the Fourth Proportional to 2,376.13, 3,278.99 and 1,328.20

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Solution

The fourth proportional to 2,376.13, 3,278.99 and 1,328.20 is: 1,832.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,376.13 : 3,278.99 = 1,328.20 : x
  2. Step 2: Convert to fraction form
    2,376.13/3,278.99 = 1,328.20/x
  3. Step 3: Cross multiply
    2,376.13x = 3,278.99 × 1,328.20
  4. Step 4: Simplify right side
    2,376.13x = 4,355,154.52
  5. Step 5: Solve for x
    x = 4,355,154.52/2,376.13
  6. Step 6: Final answer
    x = 1,832.88

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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.