Home / 7,166.26-9,888.96-3,979.50

Finding the Fourth Proportional to 7,166.26, 9,888.96 and 3,979.50

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Solution

The fourth proportional to 7,166.26, 9,888.96 and 3,979.50 is: 5,491.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,166.26 : 9,888.96 = 3,979.50 : x
  2. Step 2: Convert to fraction form
    7,166.26/9,888.96 = 3,979.50/x
  3. Step 3: Cross multiply
    7,166.26x = 9,888.96 × 3,979.50
  4. Step 4: Simplify right side
    7,166.26x = 39,353,116.32
  5. Step 5: Solve for x
    x = 39,353,116.32/7,166.26
  6. Step 6: Final answer
    x = 5,491.44

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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.