Home / 6,420.86-8,860.66-3,588.28

Finding the Fourth Proportional to 6,420.86, 8,860.66 and 3,588.28

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Solution

The fourth proportional to 6,420.86, 8,860.66 and 3,588.28 is: 4,951.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.86 : 8,860.66 = 3,588.28 : x
  2. Step 2: Convert to fraction form
    6,420.86/8,860.66 = 3,588.28/x
  3. Step 3: Cross multiply
    6,420.86x = 8,860.66 × 3,588.28
  4. Step 4: Simplify right side
    6,420.86x = 31,794,529.06
  5. Step 5: Solve for x
    x = 31,794,529.06/6,420.86
  6. Step 6: Final answer
    x = 4,951.76

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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.