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Finding the Fourth Proportional to 7,888.71, 11,826.82 and 3,937.93

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Solution

The fourth proportional to 7,888.71, 11,826.82 and 3,937.93 is: 5,903.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888.71 : 11,826.82 = 3,937.93 : x
  2. Step 2: Convert to fraction form
    7,888.71/11,826.82 = 3,937.93/x
  3. Step 3: Cross multiply
    7,888.71x = 11,826.82 × 3,937.93
  4. Step 4: Simplify right side
    7,888.71x = 46,573,189.28
  5. Step 5: Solve for x
    x = 46,573,189.28/7,888.71
  6. Step 6: Final answer
    x = 5,903.78

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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.