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Finding the Fourth Proportional to 7,888.41, 11,816.51 and 4,917.12

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Solution

The fourth proportional to 7,888.41, 11,816.51 and 4,917.12 is: 7,365.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888.41 : 11,816.51 = 4,917.12 : x
  2. Step 2: Convert to fraction form
    7,888.41/11,816.51 = 4,917.12/x
  3. Step 3: Cross multiply
    7,888.41x = 11,816.51 × 4,917.12
  4. Step 4: Simplify right side
    7,888.41x = 58,103,173.07
  5. Step 5: Solve for x
    x = 58,103,173.07/7,888.41
  6. Step 6: Final answer
    x = 7,365.64

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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.