Home / 9,118.60-13,679.74-2,879.58

Finding the Fourth Proportional to 9,118.60, 13,679.74 and 2,879.58

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Solution

The fourth proportional to 9,118.60, 13,679.74 and 2,879.58 is: 4,319.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.60 : 13,679.74 = 2,879.58 : x
  2. Step 2: Convert to fraction form
    9,118.60/13,679.74 = 2,879.58/x
  3. Step 3: Cross multiply
    9,118.60x = 13,679.74 × 2,879.58
  4. Step 4: Simplify right side
    9,118.60x = 39,391,905.71
  5. Step 5: Solve for x
    x = 39,391,905.71/9,118.60
  6. Step 6: Final answer
    x = 4,319.95

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1.5x scale

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.