Home / 3,139.49-4,681.79-2,751.29

Finding the Fourth Proportional to 3,139.49, 4,681.79 and 2,751.29

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Solution

The fourth proportional to 3,139.49, 4,681.79 and 2,751.29 is: 4,102.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.49 : 4,681.79 = 2,751.29 : x
  2. Step 2: Convert to fraction form
    3,139.49/4,681.79 = 2,751.29/x
  3. Step 3: Cross multiply
    3,139.49x = 4,681.79 × 2,751.29
  4. Step 4: Simplify right side
    3,139.49x = 12,880,962.01
  5. Step 5: Solve for x
    x = 12,880,962.01/3,139.49
  6. Step 6: Final answer
    x = 4,102.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.