Home / 1,867.20-2,803.22-1,319.64

Finding the Fourth Proportional to 1,867.20, 2,803.22 and 1,319.64

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Solution

The fourth proportional to 1,867.20, 2,803.22 and 1,319.64 is: 1,981.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.20 : 2,803.22 = 1,319.64 : x
  2. Step 2: Convert to fraction form
    1,867.20/2,803.22 = 1,319.64/x
  3. Step 3: Cross multiply
    1,867.20x = 2,803.22 × 1,319.64
  4. Step 4: Simplify right side
    1,867.20x = 3,699,241.24
  5. Step 5: Solve for x
    x = 3,699,241.24/1,867.20
  6. Step 6: Final answer
    x = 1,981.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.