Home / 2,160.12-2,982.10-1,531.16

Finding the Fourth Proportional to 2,160.12, 2,982.10 and 1,531.16

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Solution

The fourth proportional to 2,160.12, 2,982.10 and 1,531.16 is: 2,113.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.12 : 2,982.10 = 1,531.16 : x
  2. Step 2: Convert to fraction form
    2,160.12/2,982.10 = 1,531.16/x
  3. Step 3: Cross multiply
    2,160.12x = 2,982.10 × 1,531.16
  4. Step 4: Simplify right side
    2,160.12x = 4,566,072.24
  5. Step 5: Solve for x
    x = 4,566,072.24/2,160.12
  6. Step 6: Final answer
    x = 2,113.80

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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.