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Finding the Fourth Proportional to 7,895.89, 11,838.57 and 3,148.89

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Solution

The fourth proportional to 7,895.89, 11,838.57 and 3,148.89 is: 4,721.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,895.89 : 11,838.57 = 3,148.89 : x
  2. Step 2: Convert to fraction form
    7,895.89/11,838.57 = 3,148.89/x
  3. Step 3: Cross multiply
    7,895.89x = 11,838.57 × 3,148.89
  4. Step 4: Simplify right side
    7,895.89x = 37,278,354.69
  5. Step 5: Solve for x
    x = 37,278,354.69/7,895.89
  6. Step 6: Final answer
    x = 4,721.24

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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.