Home / 7,166.34-9,890.15-3,979.85

Finding the Fourth Proportional to 7,166.34, 9,890.15 and 3,979.85

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Solution

The fourth proportional to 7,166.34, 9,890.15 and 3,979.85 is: 5,492.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,166.34 : 9,890.15 = 3,979.85 : x
  2. Step 2: Convert to fraction form
    7,166.34/9,890.15 = 3,979.85/x
  3. Step 3: Cross multiply
    7,166.34x = 9,890.15 × 3,979.85
  4. Step 4: Simplify right side
    7,166.34x = 39,361,244.13
  5. Step 5: Solve for x
    x = 39,361,244.13/7,166.34
  6. Step 6: Final answer
    x = 5,492.52

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Double scale
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1.5x scale

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.