Home / 1,474.20-2,210.55-858.03

Finding the Fourth Proportional to 1,474.20, 2,210.55 and 858.03

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Solution

The fourth proportional to 1,474.20, 2,210.55 and 858.03 is: 1,286.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.20 : 2,210.55 = 858.03 : x
  2. Step 2: Convert to fraction form
    1,474.20/2,210.55 = 858.03/x
  3. Step 3: Cross multiply
    1,474.20x = 2,210.55 × 858.03
  4. Step 4: Simplify right side
    1,474.20x = 1,896,718.22
  5. Step 5: Solve for x
    x = 1,896,718.22/1,474.20
  6. Step 6: Final answer
    x = 1,286.61

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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.