Home / 3,126.35-4,314.35-1,729.10

Finding the Fourth Proportional to 3,126.35, 4,314.35 and 1,729.10

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Solution

The fourth proportional to 3,126.35, 4,314.35 and 1,729.10 is: 2,386.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.35 : 4,314.35 = 1,729.10 : x
  2. Step 2: Convert to fraction form
    3,126.35/4,314.35 = 1,729.10/x
  3. Step 3: Cross multiply
    3,126.35x = 4,314.35 × 1,729.10
  4. Step 4: Simplify right side
    3,126.35x = 7,459,942.59
  5. Step 5: Solve for x
    x = 7,459,942.59/3,126.35
  6. Step 6: Final answer
    x = 2,386.15

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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.