Home / 2,549.13-3,509.64-1,988.88

Finding the Fourth Proportional to 2,549.13, 3,509.64 and 1,988.88

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Solution

The fourth proportional to 2,549.13, 3,509.64 and 1,988.88 is: 2,738.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,549.13 : 3,509.64 = 1,988.88 : x
  2. Step 2: Convert to fraction form
    2,549.13/3,509.64 = 1,988.88/x
  3. Step 3: Cross multiply
    2,549.13x = 3,509.64 × 1,988.88
  4. Step 4: Simplify right side
    2,549.13x = 6,980,252.80
  5. Step 5: Solve for x
    x = 6,980,252.80/2,549.13
  6. Step 6: Final answer
    x = 2,738.29

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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.