Home / 5,213.83-7,820.75-1,318.24

Finding the Fourth Proportional to 5,213.83, 7,820.75 and 1,318.24

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Solution

The fourth proportional to 5,213.83, 7,820.75 and 1,318.24 is: 1,977.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.83 : 7,820.75 = 1,318.24 : x
  2. Step 2: Convert to fraction form
    5,213.83/7,820.75 = 1,318.24/x
  3. Step 3: Cross multiply
    5,213.83x = 7,820.75 × 1,318.24
  4. Step 4: Simplify right side
    5,213.83x = 10,309,579.79
  5. Step 5: Solve for x
    x = 10,309,579.79/5,213.83
  6. Step 6: Final answer
    x = 1,977.35

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Double scale
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Similar ratio
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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.