Home / 8,418.79-11,617.84-4,642.29

Finding the Fourth Proportional to 8,418.79, 11,617.84 and 4,642.29

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Solution

The fourth proportional to 8,418.79, 11,617.84 and 4,642.29 is: 6,406.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.79 : 11,617.84 = 4,642.29 : x
  2. Step 2: Convert to fraction form
    8,418.79/11,617.84 = 4,642.29/x
  3. Step 3: Cross multiply
    8,418.79x = 11,617.84 × 4,642.29
  4. Step 4: Simplify right side
    8,418.79x = 53,933,373.73
  5. Step 5: Solve for x
    x = 53,933,373.73/8,418.79
  6. Step 6: Final answer
    x = 6,406.31

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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.