Home / 3,126.06-4,689.90-1,395.90

Finding the Fourth Proportional to 3,126.06, 4,689.90 and 1,395.90

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Solution

The fourth proportional to 3,126.06, 4,689.90 and 1,395.90 is: 2,094.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.06 : 4,689.90 = 1,395.90 : x
  2. Step 2: Convert to fraction form
    3,126.06/4,689.90 = 1,395.90/x
  3. Step 3: Cross multiply
    3,126.06x = 4,689.90 × 1,395.90
  4. Step 4: Simplify right side
    3,126.06x = 6,546,631.41
  5. Step 5: Solve for x
    x = 6,546,631.41/3,126.06
  6. Step 6: Final answer
    x = 2,094.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.