Home / 3,126.38-4,314.53-1,729.13

Finding the Fourth Proportional to 3,126.38, 4,314.53 and 1,729.13

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Solution

The fourth proportional to 3,126.38, 4,314.53 and 1,729.13 is: 2,386.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.38 : 4,314.53 = 1,729.13 : x
  2. Step 2: Convert to fraction form
    3,126.38/4,314.53 = 1,729.13/x
  3. Step 3: Cross multiply
    3,126.38x = 4,314.53 × 1,729.13
  4. Step 4: Simplify right side
    3,126.38x = 7,460,366.01
  5. Step 5: Solve for x
    x = 7,460,366.01/3,126.38
  6. Step 6: Final answer
    x = 2,386.27

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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.