Home / 7,166.61-9,890.09-3,979.83

Finding the Fourth Proportional to 7,166.61, 9,890.09 and 3,979.83

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Solution

The fourth proportional to 7,166.61, 9,890.09 and 3,979.83 is: 5,492.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,166.61 : 9,890.09 = 3,979.83 : x
  2. Step 2: Convert to fraction form
    7,166.61/9,890.09 = 3,979.83/x
  3. Step 3: Cross multiply
    7,166.61x = 9,890.09 × 3,979.83
  4. Step 4: Simplify right side
    7,166.61x = 39,360,909.00
  5. Step 5: Solve for x
    x = 39,360,909.00/7,166.61
  6. Step 6: Final answer
    x = 5,492.26

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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.