Home / 8,065.36-11,129.80-4,528.72

Finding the Fourth Proportional to 8,065.36, 11,129.80 and 4,528.72

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Solution

The fourth proportional to 8,065.36, 11,129.80 and 4,528.72 is: 6,249.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,065.36 : 11,129.80 = 4,528.72 : x
  2. Step 2: Convert to fraction form
    8,065.36/11,129.80 = 4,528.72/x
  3. Step 3: Cross multiply
    8,065.36x = 11,129.80 × 4,528.72
  4. Step 4: Simplify right side
    8,065.36x = 50,403,747.86
  5. Step 5: Solve for x
    x = 50,403,747.86/8,065.36
  6. Step 6: Final answer
    x = 6,249.41

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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.