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Finding the Fourth Proportional to 2,055.79, 3,084.90 and 758.17

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Solution

The fourth proportional to 2,055.79, 3,084.90 and 758.17 is: 1,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,055.79 : 3,084.90 = 758.17 : x
  2. Step 2: Convert to fraction form
    2,055.79/3,084.90 = 758.17/x
  3. Step 3: Cross multiply
    2,055.79x = 3,084.90 × 758.17
  4. Step 4: Simplify right side
    2,055.79x = 2,338,878.63
  5. Step 5: Solve for x
    x = 2,338,878.63/2,055.79
  6. Step 6: Final answer
    x = 1,137.70

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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.