Home / 1,988.06-2,726.08-1,918.53

Finding the Fourth Proportional to 1,988.06, 2,726.08 and 1,918.53

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Solution

The fourth proportional to 1,988.06, 2,726.08 and 1,918.53 is: 2,630.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.06 : 2,726.08 = 1,918.53 : x
  2. Step 2: Convert to fraction form
    1,988.06/2,726.08 = 1,918.53/x
  3. Step 3: Cross multiply
    1,988.06x = 2,726.08 × 1,918.53
  4. Step 4: Simplify right side
    1,988.06x = 5,230,061.47
  5. Step 5: Solve for x
    x = 5,230,061.47/1,988.06
  6. Step 6: Final answer
    x = 2,630.74

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.