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Finding the Fourth Proportional to 7,888.48, 11,831.05 and 2,958.49

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Solution

The fourth proportional to 7,888.48, 11,831.05 and 2,958.49 is: 4,437.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888.48 : 11,831.05 = 2,958.49 : x
  2. Step 2: Convert to fraction form
    7,888.48/11,831.05 = 2,958.49/x
  3. Step 3: Cross multiply
    7,888.48x = 11,831.05 × 2,958.49
  4. Step 4: Simplify right side
    7,888.48x = 35,002,043.11
  5. Step 5: Solve for x
    x = 35,002,043.11/7,888.48
  6. Step 6: Final answer
    x = 4,437.11

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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.