Home / 3,988.74-5,504.56-2,220.52

Finding the Fourth Proportional to 3,988.74, 5,504.56 and 2,220.52

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Solution

The fourth proportional to 3,988.74, 5,504.56 and 2,220.52 is: 3,064.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.74 : 5,504.56 = 2,220.52 : x
  2. Step 2: Convert to fraction form
    3,988.74/5,504.56 = 2,220.52/x
  3. Step 3: Cross multiply
    3,988.74x = 5,504.56 × 2,220.52
  4. Step 4: Simplify right side
    3,988.74x = 12,222,985.57
  5. Step 5: Solve for x
    x = 12,222,985.57/3,988.74
  6. Step 6: Final answer
    x = 3,064.37

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1.5x scale

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.