Home / 2,084.15-3,126.65-987.93

Finding the Fourth Proportional to 2,084.15, 3,126.65 and 987.93

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Solution

The fourth proportional to 2,084.15, 3,126.65 and 987.93 is: 1,482.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,084.15 : 3,126.65 = 987.93 : x
  2. Step 2: Convert to fraction form
    2,084.15/3,126.65 = 987.93/x
  3. Step 3: Cross multiply
    2,084.15x = 3,126.65 × 987.93
  4. Step 4: Simplify right side
    2,084.15x = 3,088,906.39
  5. Step 5: Solve for x
    x = 3,088,906.39/2,084.15
  6. Step 6: Final answer
    x = 1,482.09

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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.