Home / 3,126.16-4,689.42-1,178.38

Finding the Fourth Proportional to 3,126.16, 4,689.42 and 1,178.38

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Solution

The fourth proportional to 3,126.16, 4,689.42 and 1,178.38 is: 1,767.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.16 : 4,689.42 = 1,178.38 : x
  2. Step 2: Convert to fraction form
    3,126.16/4,689.42 = 1,178.38/x
  3. Step 3: Cross multiply
    3,126.16x = 4,689.42 × 1,178.38
  4. Step 4: Simplify right side
    3,126.16x = 5,525,918.74
  5. Step 5: Solve for x
    x = 5,525,918.74/3,126.16
  6. Step 6: Final answer
    x = 1,767.64

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1.5x scale

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.