Home / 6,385.36-8,812.28-3,591.28

Finding the Fourth Proportional to 6,385.36, 8,812.28 and 3,591.28

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Solution

The fourth proportional to 6,385.36, 8,812.28 and 3,591.28 is: 4,956.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.36 : 8,812.28 = 3,591.28 : x
  2. Step 2: Convert to fraction form
    6,385.36/8,812.28 = 3,591.28/x
  3. Step 3: Cross multiply
    6,385.36x = 8,812.28 × 3,591.28
  4. Step 4: Simplify right side
    6,385.36x = 31,647,364.92
  5. Step 5: Solve for x
    x = 31,647,364.92/6,385.36
  6. Step 6: Final answer
    x = 4,956.24

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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.