Home / 3,988.01-5,503.07-2,309.09

Finding the Fourth Proportional to 3,988.01, 5,503.07 and 2,309.09

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Solution

The fourth proportional to 3,988.01, 5,503.07 and 2,309.09 is: 3,186.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.01 : 5,503.07 = 2,309.09 : x
  2. Step 2: Convert to fraction form
    3,988.01/5,503.07 = 2,309.09/x
  3. Step 3: Cross multiply
    3,988.01x = 5,503.07 × 2,309.09
  4. Step 4: Simplify right side
    3,988.01x = 12,707,083.91
  5. Step 5: Solve for x
    x = 12,707,083.91/3,988.01
  6. Step 6: Final answer
    x = 3,186.32

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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.