Home / 3,856.05-5,316.53-3,218.91

Finding the Fourth Proportional to 3,856.05, 5,316.53 and 3,218.91

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Solution

The fourth proportional to 3,856.05, 5,316.53 and 3,218.91 is: 4,438.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.05 : 5,316.53 = 3,218.91 : x
  2. Step 2: Convert to fraction form
    3,856.05/5,316.53 = 3,218.91/x
  3. Step 3: Cross multiply
    3,856.05x = 5,316.53 × 3,218.91
  4. Step 4: Simplify right side
    3,856.05x = 17,113,431.58
  5. Step 5: Solve for x
    x = 17,113,431.58/3,856.05
  6. Step 6: Final answer
    x = 4,438.07

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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.