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Finding the Fourth Proportional to 7,894.99, 10,898.63 and 5,207.79

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Solution

The fourth proportional to 7,894.99, 10,898.63 and 5,207.79 is: 7,189.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,894.99 : 10,898.63 = 5,207.79 : x
  2. Step 2: Convert to fraction form
    7,894.99/10,898.63 = 5,207.79/x
  3. Step 3: Cross multiply
    7,894.99x = 10,898.63 × 5,207.79
  4. Step 4: Simplify right side
    7,894.99x = 56,757,803.57
  5. Step 5: Solve for x
    x = 56,757,803.57/7,894.99
  6. Step 6: Final answer
    x = 7,189.09

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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.