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Finding the Fourth Proportional to 9,866.10, 13,614.94 and 5,389.62

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Solution

The fourth proportional to 9,866.10, 13,614.94 and 5,389.62 is: 7,437.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,866.10 : 13,614.94 = 5,389.62 : x
  2. Step 2: Convert to fraction form
    9,866.10/13,614.94 = 5,389.62/x
  3. Step 3: Cross multiply
    9,866.10x = 13,614.94 × 5,389.62
  4. Step 4: Simplify right side
    9,866.10x = 73,379,352.92
  5. Step 5: Solve for x
    x = 73,379,352.92/9,866.10
  6. Step 6: Final answer
    x = 7,437.52

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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.