Home / 8,439.88-11,646.52-5,083.78

Finding the Fourth Proportional to 8,439.88, 11,646.52 and 5,083.78

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Solution

The fourth proportional to 8,439.88, 11,646.52 and 5,083.78 is: 7,015.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.88 : 11,646.52 = 5,083.78 : x
  2. Step 2: Convert to fraction form
    8,439.88/11,646.52 = 5,083.78/x
  3. Step 3: Cross multiply
    8,439.88x = 11,646.52 × 5,083.78
  4. Step 4: Simplify right side
    8,439.88x = 59,208,345.45
  5. Step 5: Solve for x
    x = 59,208,345.45/8,439.88
  6. Step 6: Final answer
    x = 7,015.31

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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.