Home / 1,788.29-2,681.77-618.07

Finding the Fourth Proportional to 1,788.29, 2,681.77 and 618.07

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Solution

The fourth proportional to 1,788.29, 2,681.77 and 618.07 is: 926.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.29 : 2,681.77 = 618.07 : x
  2. Step 2: Convert to fraction form
    1,788.29/2,681.77 = 618.07/x
  3. Step 3: Cross multiply
    1,788.29x = 2,681.77 × 618.07
  4. Step 4: Simplify right side
    1,788.29x = 1,657,521.58
  5. Step 5: Solve for x
    x = 1,657,521.58/1,788.29
  6. Step 6: Final answer
    x = 926.88

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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.