Home / 8,178.87-11,269.47-5,521.66

Finding the Fourth Proportional to 8,178.87, 11,269.47 and 5,521.66

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Solution

The fourth proportional to 8,178.87, 11,269.47 and 5,521.66 is: 7,608.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.87 : 11,269.47 = 5,521.66 : x
  2. Step 2: Convert to fraction form
    8,178.87/11,269.47 = 5,521.66/x
  3. Step 3: Cross multiply
    8,178.87x = 11,269.47 × 5,521.66
  4. Step 4: Simplify right side
    8,178.87x = 62,226,181.72
  5. Step 5: Solve for x
    x = 62,226,181.72/8,178.87
  6. Step 6: Final answer
    x = 7,608.16

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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.