Home / 1,979.10-2,965.68-1,587.06

Finding the Fourth Proportional to 1,979.10, 2,965.68 and 1,587.06

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Solution

The fourth proportional to 1,979.10, 2,965.68 and 1,587.06 is: 2,378.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.10 : 2,965.68 = 1,587.06 : x
  2. Step 2: Convert to fraction form
    1,979.10/2,965.68 = 1,587.06/x
  3. Step 3: Cross multiply
    1,979.10x = 2,965.68 × 1,587.06
  4. Step 4: Simplify right side
    1,979.10x = 4,706,712.10
  5. Step 5: Solve for x
    x = 4,706,712.10/1,979.10
  6. Step 6: Final answer
    x = 2,378.21

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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.