Home / 5,818-8,721.59-2,119.39

Finding the Fourth Proportional to 5,818, 8,721.59 and 2,119.39

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Solution

The fourth proportional to 5,818, 8,721.59 and 2,119.39 is: 3,177.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,818 : 8,721.59 = 2,119.39 : x
  2. Step 2: Convert to fraction form
    5,818/8,721.59 = 2,119.39/x
  3. Step 3: Cross multiply
    5,818x = 8,721.59 × 2,119.39
  4. Step 4: Simplify right side
    5,818x = 18,484,450.63
  5. Step 5: Solve for x
    x = 18,484,450.63/5,818
  6. Step 6: Final answer
    x = 3,177.11

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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.