Home / 7,877.40-11,816.07-2,330.78

Finding the Fourth Proportional to 7,877.40, 11,816.07 and 2,330.78

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Solution

The fourth proportional to 7,877.40, 11,816.07 and 2,330.78 is: 3,496.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.40 : 11,816.07 = 2,330.78 : x
  2. Step 2: Convert to fraction form
    7,877.40/11,816.07 = 2,330.78/x
  3. Step 3: Cross multiply
    7,877.40x = 11,816.07 × 2,330.78
  4. Step 4: Simplify right side
    7,877.40x = 27,540,653.81
  5. Step 5: Solve for x
    x = 27,540,653.81/7,877.40
  6. Step 6: Final answer
    x = 3,496.16

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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.