Home / 8,418.09-11,612.21-5,268.81

Finding the Fourth Proportional to 8,418.09, 11,612.21 and 5,268.81

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Solution

The fourth proportional to 8,418.09, 11,612.21 and 5,268.81 is: 7,267.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.09 : 11,612.21 = 5,268.81 : x
  2. Step 2: Convert to fraction form
    8,418.09/11,612.21 = 5,268.81/x
  3. Step 3: Cross multiply
    8,418.09x = 11,612.21 × 5,268.81
  4. Step 4: Simplify right side
    8,418.09x = 61,182,528.17
  5. Step 5: Solve for x
    x = 61,182,528.17/8,418.09
  6. Step 6: Final answer
    x = 7,267.98

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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.