Home / 2,681.49-4,023.37-1,121.80

Finding the Fourth Proportional to 2,681.49, 4,023.37 and 1,121.80

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Solution

The fourth proportional to 2,681.49, 4,023.37 and 1,121.80 is: 1,683.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.49 : 4,023.37 = 1,121.80 : x
  2. Step 2: Convert to fraction form
    2,681.49/4,023.37 = 1,121.80/x
  3. Step 3: Cross multiply
    2,681.49x = 4,023.37 × 1,121.80
  4. Step 4: Simplify right side
    2,681.49x = 4,513,416.47
  5. Step 5: Solve for x
    x = 4,513,416.47/2,681.49
  6. Step 6: Final answer
    x = 1,683.17

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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.