Home / 8,180.78-11,288.33-4,643.30

Finding the Fourth Proportional to 8,180.78, 11,288.33 and 4,643.30

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Solution

The fourth proportional to 8,180.78, 11,288.33 and 4,643.30 is: 6,407.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,180.78 : 11,288.33 = 4,643.30 : x
  2. Step 2: Convert to fraction form
    8,180.78/11,288.33 = 4,643.30/x
  3. Step 3: Cross multiply
    8,180.78x = 11,288.33 × 4,643.30
  4. Step 4: Simplify right side
    8,180.78x = 52,415,142.52
  5. Step 5: Solve for x
    x = 52,415,142.52/8,180.78
  6. Step 6: Final answer
    x = 6,407.11

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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.