Home / 1,988.02-2,743.36-1,103.76

Finding the Fourth Proportional to 1,988.02, 2,743.36 and 1,103.76

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Solution

The fourth proportional to 1,988.02, 2,743.36 and 1,103.76 is: 1,523.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.02 : 2,743.36 = 1,103.76 : x
  2. Step 2: Convert to fraction form
    1,988.02/2,743.36 = 1,103.76/x
  3. Step 3: Cross multiply
    1,988.02x = 2,743.36 × 1,103.76
  4. Step 4: Simplify right side
    1,988.02x = 3,028,017.18
  5. Step 5: Solve for x
    x = 3,028,017.18/1,988.02
  6. Step 6: Final answer
    x = 1,523.13

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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.