Home / 1,788.26-2,681.40-617.72

Finding the Fourth Proportional to 1,788.26, 2,681.40 and 617.72

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Solution

The fourth proportional to 1,788.26, 2,681.40 and 617.72 is: 926.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.26 : 2,681.40 = 617.72 : x
  2. Step 2: Convert to fraction form
    1,788.26/2,681.40 = 617.72/x
  3. Step 3: Cross multiply
    1,788.26x = 2,681.40 × 617.72
  4. Step 4: Simplify right side
    1,788.26x = 1,656,354.41
  5. Step 5: Solve for x
    x = 1,656,354.41/1,788.26
  6. Step 6: Final answer
    x = 926.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.