Home / 3,126.32-4,689.16-1,277.64

Finding the Fourth Proportional to 3,126.32, 4,689.16 and 1,277.64

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Solution

The fourth proportional to 3,126.32, 4,689.16 and 1,277.64 is: 1,916.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.32 : 4,689.16 = 1,277.64 : x
  2. Step 2: Convert to fraction form
    3,126.32/4,689.16 = 1,277.64/x
  3. Step 3: Cross multiply
    3,126.32x = 4,689.16 × 1,277.64
  4. Step 4: Simplify right side
    3,126.32x = 5,991,058.38
  5. Step 5: Solve for x
    x = 5,991,058.38/3,126.32
  6. Step 6: Final answer
    x = 1,916.33

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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.