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Finding the Fourth Proportional to 7,898.78, 10,893.02 and 7,270.68

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Solution

The fourth proportional to 7,898.78, 10,893.02 and 7,270.68 is: 10,026.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.78 : 10,893.02 = 7,270.68 : x
  2. Step 2: Convert to fraction form
    7,898.78/10,893.02 = 7,270.68/x
  3. Step 3: Cross multiply
    7,898.78x = 10,893.02 × 7,270.68
  4. Step 4: Simplify right side
    7,898.78x = 79,199,662.65
  5. Step 5: Solve for x
    x = 79,199,662.65/7,898.78
  6. Step 6: Final answer
    x = 10,026.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.