Home / 1,642.12-2,265.57-933.89

Finding the Fourth Proportional to 1,642.12, 2,265.57 and 933.89

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Solution

The fourth proportional to 1,642.12, 2,265.57 and 933.89 is: 1,288.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.12 : 2,265.57 = 933.89 : x
  2. Step 2: Convert to fraction form
    1,642.12/2,265.57 = 933.89/x
  3. Step 3: Cross multiply
    1,642.12x = 2,265.57 × 933.89
  4. Step 4: Simplify right side
    1,642.12x = 2,115,781.84
  5. Step 5: Solve for x
    x = 2,115,781.84/1,642.12
  6. Step 6: Final answer
    x = 1,288.45

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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.