Home / 6,422.78-8,863.34-3,590.22

Finding the Fourth Proportional to 6,422.78, 8,863.34 and 3,590.22

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Solution

The fourth proportional to 6,422.78, 8,863.34 and 3,590.22 is: 4,954.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.78 : 8,863.34 = 3,590.22 : x
  2. Step 2: Convert to fraction form
    6,422.78/8,863.34 = 3,590.22/x
  3. Step 3: Cross multiply
    6,422.78x = 8,863.34 × 3,590.22
  4. Step 4: Simplify right side
    6,422.78x = 31,821,340.53
  5. Step 5: Solve for x
    x = 31,821,340.53/6,422.78
  6. Step 6: Final answer
    x = 4,954.45

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Half scale
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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.