Home / 5,239.81-7,230.80-2,881.95

Finding the Fourth Proportional to 5,239.81, 7,230.80 and 2,881.95

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Solution

The fourth proportional to 5,239.81, 7,230.80 and 2,881.95 is: 3,977.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.81 : 7,230.80 = 2,881.95 : x
  2. Step 2: Convert to fraction form
    5,239.81/7,230.80 = 2,881.95/x
  3. Step 3: Cross multiply
    5,239.81x = 7,230.80 × 2,881.95
  4. Step 4: Simplify right side
    5,239.81x = 20,838,816.77
  5. Step 5: Solve for x
    x = 20,838,816.77/5,239.81
  6. Step 6: Final answer
    x = 3,977.02

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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.