Home / 1,465.90-2,209.61-1,381.21

Finding the Fourth Proportional to 1,465.90, 2,209.61 and 1,381.21

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Solution

The fourth proportional to 1,465.90, 2,209.61 and 1,381.21 is: 2,081.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,465.90 : 2,209.61 = 1,381.21 : x
  2. Step 2: Convert to fraction form
    1,465.90/2,209.61 = 1,381.21/x
  3. Step 3: Cross multiply
    1,465.90x = 2,209.61 × 1,381.21
  4. Step 4: Simplify right side
    1,465.90x = 3,051,935.43
  5. Step 5: Solve for x
    x = 3,051,935.43/1,465.90
  6. Step 6: Final answer
    x = 2,081.95

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.