Home / 8,422.05-11,621.89-4,645.24

Finding the Fourth Proportional to 8,422.05, 11,621.89 and 4,645.24

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Solution

The fourth proportional to 8,422.05, 11,621.89 and 4,645.24 is: 6,410.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.05 : 11,621.89 = 4,645.24 : x
  2. Step 2: Convert to fraction form
    8,422.05/11,621.89 = 4,645.24/x
  3. Step 3: Cross multiply
    8,422.05x = 11,621.89 × 4,645.24
  4. Step 4: Simplify right side
    8,422.05x = 53,986,427.64
  5. Step 5: Solve for x
    x = 53,986,427.64/8,422.05
  6. Step 6: Final answer
    x = 6,410.13

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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.