Home / 2,867.16-4,299.84-918.90

Finding the Fourth Proportional to 2,867.16, 4,299.84 and 918.90

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Solution

The fourth proportional to 2,867.16, 4,299.84 and 918.90 is: 1,378.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.16 : 4,299.84 = 918.90 : x
  2. Step 2: Convert to fraction form
    2,867.16/4,299.84 = 918.90/x
  3. Step 3: Cross multiply
    2,867.16x = 4,299.84 × 918.90
  4. Step 4: Simplify right side
    2,867.16x = 3,951,122.98
  5. Step 5: Solve for x
    x = 3,951,122.98/2,867.16
  6. Step 6: Final answer
    x = 1,378.06

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1.5x scale

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.