Home / 2,451.47-3,382.19-1,389.12

Finding the Fourth Proportional to 2,451.47, 3,382.19 and 1,389.12

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Solution

The fourth proportional to 2,451.47, 3,382.19 and 1,389.12 is: 1,916.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,451.47 : 3,382.19 = 1,389.12 : x
  2. Step 2: Convert to fraction form
    2,451.47/3,382.19 = 1,389.12/x
  3. Step 3: Cross multiply
    2,451.47x = 3,382.19 × 1,389.12
  4. Step 4: Simplify right side
    2,451.47x = 4,698,253.35
  5. Step 5: Solve for x
    x = 4,698,253.35/2,451.47
  6. Step 6: Final answer
    x = 1,916.51

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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.