Home / 2,451.40-3,382.09-1,389.02

Finding the Fourth Proportional to 2,451.40, 3,382.09 and 1,389.02

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Solution

The fourth proportional to 2,451.40, 3,382.09 and 1,389.02 is: 1,916.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,451.40 : 3,382.09 = 1,389.02 : x
  2. Step 2: Convert to fraction form
    2,451.40/3,382.09 = 1,389.02/x
  3. Step 3: Cross multiply
    2,451.40x = 3,382.09 × 1,389.02
  4. Step 4: Simplify right side
    2,451.40x = 4,697,770.27
  5. Step 5: Solve for x
    x = 4,697,770.27/2,451.40
  6. Step 6: Final answer
    x = 1,916.36

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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.