Home / 6,419.47-8,856.51-3,765.91

Finding the Fourth Proportional to 6,419.47, 8,856.51 and 3,765.91

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Solution

The fourth proportional to 6,419.47, 8,856.51 and 3,765.91 is: 5,195.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,419.47 : 8,856.51 = 3,765.91 : x
  2. Step 2: Convert to fraction form
    6,419.47/8,856.51 = 3,765.91/x
  3. Step 3: Cross multiply
    6,419.47x = 8,856.51 × 3,765.91
  4. Step 4: Simplify right side
    6,419.47x = 33,352,819.57
  5. Step 5: Solve for x
    x = 33,352,819.57/6,419.47
  6. Step 6: Final answer
    x = 5,195.57

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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.