Home / 4,921.87-6,790.47-3,154.45

Finding the Fourth Proportional to 4,921.87, 6,790.47 and 3,154.45

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Solution

The fourth proportional to 4,921.87, 6,790.47 and 3,154.45 is: 4,352.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.87 : 6,790.47 = 3,154.45 : x
  2. Step 2: Convert to fraction form
    4,921.87/6,790.47 = 3,154.45/x
  3. Step 3: Cross multiply
    4,921.87x = 6,790.47 × 3,154.45
  4. Step 4: Simplify right side
    4,921.87x = 21,420,164.14
  5. Step 5: Solve for x
    x = 21,420,164.14/4,921.87
  6. Step 6: Final answer
    x = 4,352.04

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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.