Home / 8,020.81-12,030.27-2,178.01

Finding the Fourth Proportional to 8,020.81, 12,030.27 and 2,178.01

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Solution

The fourth proportional to 8,020.81, 12,030.27 and 2,178.01 is: 3,266.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,020.81 : 12,030.27 = 2,178.01 : x
  2. Step 2: Convert to fraction form
    8,020.81/12,030.27 = 2,178.01/x
  3. Step 3: Cross multiply
    8,020.81x = 12,030.27 × 2,178.01
  4. Step 4: Simplify right side
    8,020.81x = 26,202,048.36
  5. Step 5: Solve for x
    x = 26,202,048.36/8,020.81
  6. Step 6: Final answer
    x = 3,266.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.