Home / 1,084.12-1,626.51-425.96

Finding the Fourth Proportional to 1,084.12, 1,626.51 and 425.96

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Solution

The fourth proportional to 1,084.12, 1,626.51 and 425.96 is: 639.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,084.12 : 1,626.51 = 425.96 : x
  2. Step 2: Convert to fraction form
    1,084.12/1,626.51 = 425.96/x
  3. Step 3: Cross multiply
    1,084.12x = 1,626.51 × 425.96
  4. Step 4: Simplify right side
    1,084.12x = 692,828.20
  5. Step 5: Solve for x
    x = 692,828.20/1,084.12
  6. Step 6: Final answer
    x = 639.07

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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.