Home / 2,867.12-3,954.95-1,803.20

Finding the Fourth Proportional to 2,867.12, 3,954.95 and 1,803.20

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Solution

The fourth proportional to 2,867.12, 3,954.95 and 1,803.20 is: 2,487.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.12 : 3,954.95 = 1,803.20 : x
  2. Step 2: Convert to fraction form
    2,867.12/3,954.95 = 1,803.20/x
  3. Step 3: Cross multiply
    2,867.12x = 3,954.95 × 1,803.20
  4. Step 4: Simplify right side
    2,867.12x = 7,131,537.05
  5. Step 5: Solve for x
    x = 7,131,537.05/2,867.12
  6. Step 6: Final answer
    x = 2,487.36

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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.