Home / 8,427.15-11,631.78-4,891.50

Finding the Fourth Proportional to 8,427.15, 11,631.78 and 4,891.50

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Solution

The fourth proportional to 8,427.15, 11,631.78 and 4,891.50 is: 6,751.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.15 : 11,631.78 = 4,891.50 : x
  2. Step 2: Convert to fraction form
    8,427.15/11,631.78 = 4,891.50/x
  3. Step 3: Cross multiply
    8,427.15x = 11,631.78 × 4,891.50
  4. Step 4: Simplify right side
    8,427.15x = 56,896,851.87
  5. Step 5: Solve for x
    x = 56,896,851.87/8,427.15
  6. Step 6: Final answer
    x = 6,751.61

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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.