Home / 6,464.14-8,921.47-3,947.70

Finding the Fourth Proportional to 6,464.14, 8,921.47 and 3,947.70

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Solution

The fourth proportional to 6,464.14, 8,921.47 and 3,947.70 is: 5,448.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,464.14 : 8,921.47 = 3,947.70 : x
  2. Step 2: Convert to fraction form
    6,464.14/8,921.47 = 3,947.70/x
  3. Step 3: Cross multiply
    6,464.14x = 8,921.47 × 3,947.70
  4. Step 4: Simplify right side
    6,464.14x = 35,219,325.51
  5. Step 5: Solve for x
    x = 35,219,325.51/6,464.14
  6. Step 6: Final answer
    x = 5,448.42

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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.