Home / 3,889.11-5,362.14-3,384.21

Finding the Fourth Proportional to 3,889.11, 5,362.14 and 3,384.21

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Solution

The fourth proportional to 3,889.11, 5,362.14 and 3,384.21 is: 4,666.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.11 : 5,362.14 = 3,384.21 : x
  2. Step 2: Convert to fraction form
    3,889.11/5,362.14 = 3,384.21/x
  3. Step 3: Cross multiply
    3,889.11x = 5,362.14 × 3,384.21
  4. Step 4: Simplify right side
    3,889.11x = 18,146,607.81
  5. Step 5: Solve for x
    x = 18,146,607.81/3,889.11
  6. Step 6: Final answer
    x = 4,666.01

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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.