Home / 1,971.13-2,720.04-1,175.35

Finding the Fourth Proportional to 1,971.13, 2,720.04 and 1,175.35

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Solution

The fourth proportional to 1,971.13, 2,720.04 and 1,175.35 is: 1,621.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.13 : 2,720.04 = 1,175.35 : x
  2. Step 2: Convert to fraction form
    1,971.13/2,720.04 = 1,175.35/x
  3. Step 3: Cross multiply
    1,971.13x = 2,720.04 × 1,175.35
  4. Step 4: Simplify right side
    1,971.13x = 3,196,979.54
  5. Step 5: Solve for x
    x = 3,196,979.54/1,971.13
  6. Step 6: Final answer
    x = 1,621.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.