Home / 8,151.79-11,249.13-4,615.21

Finding the Fourth Proportional to 8,151.79, 11,249.13 and 4,615.21

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Solution

The fourth proportional to 8,151.79, 11,249.13 and 4,615.21 is: 6,368.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.79 : 11,249.13 = 4,615.21 : x
  2. Step 2: Convert to fraction form
    8,151.79/11,249.13 = 4,615.21/x
  3. Step 3: Cross multiply
    8,151.79x = 11,249.13 × 4,615.21
  4. Step 4: Simplify right side
    8,151.79x = 51,917,097.27
  5. Step 5: Solve for x
    x = 51,917,097.27/8,151.79
  6. Step 6: Final answer
    x = 6,368.80

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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.