Home / 1,396.49-2,081.25-1,385.01

Finding the Fourth Proportional to 1,396.49, 2,081.25 and 1,385.01

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Solution

The fourth proportional to 1,396.49, 2,081.25 and 1,385.01 is: 2,064.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.49 : 2,081.25 = 1,385.01 : x
  2. Step 2: Convert to fraction form
    1,396.49/2,081.25 = 1,385.01/x
  3. Step 3: Cross multiply
    1,396.49x = 2,081.25 × 1,385.01
  4. Step 4: Simplify right side
    1,396.49x = 2,882,552.06
  5. Step 5: Solve for x
    x = 2,882,552.06/1,396.49
  6. Step 6: Final answer
    x = 2,064.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.