Home / 1,642.21-2,266.29-934.15

Finding the Fourth Proportional to 1,642.21, 2,266.29 and 934.15

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Solution

The fourth proportional to 1,642.21, 2,266.29 and 934.15 is: 1,289.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.21 : 2,266.29 = 934.15 : x
  2. Step 2: Convert to fraction form
    1,642.21/2,266.29 = 934.15/x
  3. Step 3: Cross multiply
    1,642.21x = 2,266.29 × 934.15
  4. Step 4: Simplify right side
    1,642.21x = 2,117,062.44
  5. Step 5: Solve for x
    x = 2,117,062.44/1,642.21
  6. Step 6: Final answer
    x = 1,289.16

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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.