Home / 4,213.72-6,318.50-1,291.32

Finding the Fourth Proportional to 4,213.72, 6,318.50 and 1,291.32

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Solution

The fourth proportional to 4,213.72, 6,318.50 and 1,291.32 is: 1,936.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,213.72 : 6,318.50 = 1,291.32 : x
  2. Step 2: Convert to fraction form
    4,213.72/6,318.50 = 1,291.32/x
  3. Step 3: Cross multiply
    4,213.72x = 6,318.50 × 1,291.32
  4. Step 4: Simplify right side
    4,213.72x = 8,159,205.42
  5. Step 5: Solve for x
    x = 8,159,205.42/4,213.72
  6. Step 6: Final answer
    x = 1,936.34

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Half scale
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Double scale
Find fourth proportional to 4,214.72, 6,320 and 1,292.32
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.