Home / 8,555.47-11,805.11-4,778.50

Finding the Fourth Proportional to 8,555.47, 11,805.11 and 4,778.50

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Solution

The fourth proportional to 8,555.47, 11,805.11 and 4,778.50 is: 6,593.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,555.47 : 11,805.11 = 4,778.50 : x
  2. Step 2: Convert to fraction form
    8,555.47/11,805.11 = 4,778.50/x
  3. Step 3: Cross multiply
    8,555.47x = 11,805.11 × 4,778.50
  4. Step 4: Simplify right side
    8,555.47x = 56,410,718.14
  5. Step 5: Solve for x
    x = 56,410,718.14/8,555.47
  6. Step 6: Final answer
    x = 6,593.53

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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.