Home / 4,666.55-6,428.57-3,920.54

Finding the Fourth Proportional to 4,666.55, 6,428.57 and 3,920.54

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Solution

The fourth proportional to 4,666.55, 6,428.57 and 3,920.54 is: 5,400.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,666.55 : 6,428.57 = 3,920.54 : x
  2. Step 2: Convert to fraction form
    4,666.55/6,428.57 = 3,920.54/x
  3. Step 3: Cross multiply
    4,666.55x = 6,428.57 × 3,920.54
  4. Step 4: Simplify right side
    4,666.55x = 25,203,414.08
  5. Step 5: Solve for x
    x = 25,203,414.08/4,666.55
  6. Step 6: Final answer
    x = 5,400.87

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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.