Home / 8,511.48-11,742.82-5,328.75

Finding the Fourth Proportional to 8,511.48, 11,742.82 and 5,328.75

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Solution

The fourth proportional to 8,511.48, 11,742.82 and 5,328.75 is: 7,351.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511.48 : 11,742.82 = 5,328.75 : x
  2. Step 2: Convert to fraction form
    8,511.48/11,742.82 = 5,328.75/x
  3. Step 3: Cross multiply
    8,511.48x = 11,742.82 × 5,328.75
  4. Step 4: Simplify right side
    8,511.48x = 62,574,582.79
  5. Step 5: Solve for x
    x = 62,574,582.79/8,511.48
  6. Step 6: Final answer
    x = 7,351.78

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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.