Home / 7,118.58-9,823.65-3,974.77

Finding the Fourth Proportional to 7,118.58, 9,823.65 and 3,974.77

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Solution

The fourth proportional to 7,118.58, 9,823.65 and 3,974.77 is: 5,485.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.58 : 9,823.65 = 3,974.77 : x
  2. Step 2: Convert to fraction form
    7,118.58/9,823.65 = 3,974.77/x
  3. Step 3: Cross multiply
    7,118.58x = 9,823.65 × 3,974.77
  4. Step 4: Simplify right side
    7,118.58x = 39,046,746.68
  5. Step 5: Solve for x
    x = 39,046,746.68/7,118.58
  6. Step 6: Final answer
    x = 5,485.18

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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.