Home / 3,126.16-4,689.72-1,074

Finding the Fourth Proportional to 3,126.16, 4,689.72 and 1,074

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Solution

The fourth proportional to 3,126.16, 4,689.72 and 1,074 is: 1,611.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.16 : 4,689.72 = 1,074 : x
  2. Step 2: Convert to fraction form
    3,126.16/4,689.72 = 1,074/x
  3. Step 3: Cross multiply
    3,126.16x = 4,689.72 × 1,074
  4. Step 4: Simplify right side
    3,126.16x = 5,036,759.28
  5. Step 5: Solve for x
    x = 5,036,759.28/3,126.16
  6. Step 6: Final answer
    x = 1,611.16

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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.