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Finding the Fourth Proportional to 3,388.66, 5,058.17 and 2,989.19

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Solution

The fourth proportional to 3,388.66, 5,058.17 and 2,989.19 is: 4,461.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.66 : 5,058.17 = 2,989.19 : x
  2. Step 2: Convert to fraction form
    3,388.66/5,058.17 = 2,989.19/x
  3. Step 3: Cross multiply
    3,388.66x = 5,058.17 × 2,989.19
  4. Step 4: Simplify right side
    3,388.66x = 15,119,816.24
  5. Step 5: Solve for x
    x = 15,119,816.24/3,388.66
  6. Step 6: Final answer
    x = 4,461.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.