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Finding the Fourth Proportional to 7,887.67, 11,831.51 and 4,427.35

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Solution

The fourth proportional to 7,887.67, 11,831.51 and 4,427.35 is: 6,641.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.67 : 11,831.51 = 4,427.35 : x
  2. Step 2: Convert to fraction form
    7,887.67/11,831.51 = 4,427.35/x
  3. Step 3: Cross multiply
    7,887.67x = 11,831.51 × 4,427.35
  4. Step 4: Simplify right side
    7,887.67x = 52,382,235.80
  5. Step 5: Solve for x
    x = 52,382,235.80/7,887.67
  6. Step 6: Final answer
    x = 6,641.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.