Home / 3,988.17-5,503.63-2,219.75

Finding the Fourth Proportional to 3,988.17, 5,503.63 and 2,219.75

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Solution

The fourth proportional to 3,988.17, 5,503.63 and 2,219.75 is: 3,063.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.17 : 5,503.63 = 2,219.75 : x
  2. Step 2: Convert to fraction form
    3,988.17/5,503.63 = 2,219.75/x
  3. Step 3: Cross multiply
    3,988.17x = 5,503.63 × 2,219.75
  4. Step 4: Simplify right side
    3,988.17x = 12,216,682.69
  5. Step 5: Solve for x
    x = 12,216,682.69/3,988.17
  6. Step 6: Final answer
    x = 3,063.23

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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.