Home / 3,988.02-5,503.31-2,219.59

Finding the Fourth Proportional to 3,988.02, 5,503.31 and 2,219.59

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Solution

The fourth proportional to 3,988.02, 5,503.31 and 2,219.59 is: 3,062.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.02 : 5,503.31 = 2,219.59 : x
  2. Step 2: Convert to fraction form
    3,988.02/5,503.31 = 2,219.59/x
  3. Step 3: Cross multiply
    3,988.02x = 5,503.31 × 2,219.59
  4. Step 4: Simplify right side
    3,988.02x = 12,215,066.99
  5. Step 5: Solve for x
    x = 12,215,066.99/3,988.02
  6. Step 6: Final answer
    x = 3,062.94

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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.