Home / 8,418.61-11,612.86-5,269.33

Finding the Fourth Proportional to 8,418.61, 11,612.86 and 5,269.33

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Solution

The fourth proportional to 8,418.61, 11,612.86 and 5,269.33 is: 7,268.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.61 : 11,612.86 = 5,269.33 : x
  2. Step 2: Convert to fraction form
    8,418.61/11,612.86 = 5,269.33/x
  3. Step 3: Cross multiply
    8,418.61x = 11,612.86 × 5,269.33
  4. Step 4: Simplify right side
    8,418.61x = 61,191,991.58
  5. Step 5: Solve for x
    x = 61,191,991.58/8,418.61
  6. Step 6: Final answer
    x = 7,268.66

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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.