Home / 2,538.80-3,513.12-2,165.18

Finding the Fourth Proportional to 2,538.80, 3,513.12 and 2,165.18

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Solution

The fourth proportional to 2,538.80, 3,513.12 and 2,165.18 is: 2,996.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,538.80 : 3,513.12 = 2,165.18 : x
  2. Step 2: Convert to fraction form
    2,538.80/3,513.12 = 2,165.18/x
  3. Step 3: Cross multiply
    2,538.80x = 3,513.12 × 2,165.18
  4. Step 4: Simplify right side
    2,538.80x = 7,606,537.16
  5. Step 5: Solve for x
    x = 7,606,537.16/2,538.80
  6. Step 6: Final answer
    x = 2,996.12

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1.5x scale

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.