Home / 5,778.92-7,976.98-3,421.08

Finding the Fourth Proportional to 5,778.92, 7,976.98 and 3,421.08

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Solution

The fourth proportional to 5,778.92, 7,976.98 and 3,421.08 is: 4,722.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,778.92 : 7,976.98 = 3,421.08 : x
  2. Step 2: Convert to fraction form
    5,778.92/7,976.98 = 3,421.08/x
  3. Step 3: Cross multiply
    5,778.92x = 7,976.98 × 3,421.08
  4. Step 4: Simplify right side
    5,778.92x = 27,289,886.74
  5. Step 5: Solve for x
    x = 27,289,886.74/5,778.92
  6. Step 6: Final answer
    x = 4,722.32

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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.