Home / 3,118.58-4,677.06-926.80

Finding the Fourth Proportional to 3,118.58, 4,677.06 and 926.80

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Solution

The fourth proportional to 3,118.58, 4,677.06 and 926.80 is: 1,389.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.58 : 4,677.06 = 926.80 : x
  2. Step 2: Convert to fraction form
    3,118.58/4,677.06 = 926.80/x
  3. Step 3: Cross multiply
    3,118.58x = 4,677.06 × 926.80
  4. Step 4: Simplify right side
    3,118.58x = 4,334,671.19
  5. Step 5: Solve for x
    x = 4,334,671.19/3,118.58
  6. Step 6: Final answer
    x = 1,389.95

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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.