Home / 2,867.12-3,956.80-1,608.28

Finding the Fourth Proportional to 2,867.12, 3,956.80 and 1,608.28

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Solution

The fourth proportional to 2,867.12, 3,956.80 and 1,608.28 is: 2,219.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.12 : 3,956.80 = 1,608.28 : x
  2. Step 2: Convert to fraction form
    2,867.12/3,956.80 = 1,608.28/x
  3. Step 3: Cross multiply
    2,867.12x = 3,956.80 × 1,608.28
  4. Step 4: Simplify right side
    2,867.12x = 6,363,642.30
  5. Step 5: Solve for x
    x = 6,363,642.30/2,867.12
  6. Step 6: Final answer
    x = 2,219.52

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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.