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Finding the Fourth Proportional to 2,652.83, 3,979.35 and 705.05

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Solution

The fourth proportional to 2,652.83, 3,979.35 and 705.05 is: 1,057.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,652.83 : 3,979.35 = 705.05 : x
  2. Step 2: Convert to fraction form
    2,652.83/3,979.35 = 705.05/x
  3. Step 3: Cross multiply
    2,652.83x = 3,979.35 × 705.05
  4. Step 4: Simplify right side
    2,652.83x = 2,805,640.72
  5. Step 5: Solve for x
    x = 2,805,640.72/2,652.83
  6. Step 6: Final answer
    x = 1,057.60

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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.