Home / 6,420.96-8,860.68-3,588.30

Finding the Fourth Proportional to 6,420.96, 8,860.68 and 3,588.30

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Solution

The fourth proportional to 6,420.96, 8,860.68 and 3,588.30 is: 4,951.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.96 : 8,860.68 = 3,588.30 : x
  2. Step 2: Convert to fraction form
    6,420.96/8,860.68 = 3,588.30/x
  3. Step 3: Cross multiply
    6,420.96x = 8,860.68 × 3,588.30
  4. Step 4: Simplify right side
    6,420.96x = 31,794,778.04
  5. Step 5: Solve for x
    x = 31,794,778.04/6,420.96
  6. Step 6: Final answer
    x = 4,951.72

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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.