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Finding the Fourth Proportional to 2,652.95, 3,979.65 and 705.13

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Solution

The fourth proportional to 2,652.95, 3,979.65 and 705.13 is: 1,057.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,652.95 : 3,979.65 = 705.13 : x
  2. Step 2: Convert to fraction form
    2,652.95/3,979.65 = 705.13/x
  3. Step 3: Cross multiply
    2,652.95x = 3,979.65 × 705.13
  4. Step 4: Simplify right side
    2,652.95x = 2,806,170.60
  5. Step 5: Solve for x
    x = 2,806,170.60/2,652.95
  6. Step 6: Final answer
    x = 1,057.75

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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.