Home / 3,126.19-4,314.37-1,781.86

Finding the Fourth Proportional to 3,126.19, 4,314.37 and 1,781.86

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Solution

The fourth proportional to 3,126.19, 4,314.37 and 1,781.86 is: 2,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.19 : 4,314.37 = 1,781.86 : x
  2. Step 2: Convert to fraction form
    3,126.19/4,314.37 = 1,781.86/x
  3. Step 3: Cross multiply
    3,126.19x = 4,314.37 × 1,781.86
  4. Step 4: Simplify right side
    3,126.19x = 7,687,603.33
  5. Step 5: Solve for x
    x = 7,687,603.33/3,126.19
  6. Step 6: Final answer
    x = 2,459.10

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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.