Home / 3,988.08-5,503.68-2,219.64

Finding the Fourth Proportional to 3,988.08, 5,503.68 and 2,219.64

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Solution

The fourth proportional to 3,988.08, 5,503.68 and 2,219.64 is: 3,063.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.08 : 5,503.68 = 2,219.64 : x
  2. Step 2: Convert to fraction form
    3,988.08/5,503.68 = 2,219.64/x
  3. Step 3: Cross multiply
    3,988.08x = 5,503.68 × 2,219.64
  4. Step 4: Simplify right side
    3,988.08x = 12,216,188.28
  5. Step 5: Solve for x
    x = 12,216,188.28/3,988.08
  6. Step 6: Final answer
    x = 3,063.18

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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.