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Finding the Fourth Proportional to 9,762.64, 13,472.39 and 5,286.30

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Solution

The fourth proportional to 9,762.64, 13,472.39 and 5,286.30 is: 7,295.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,762.64 : 13,472.39 = 5,286.30 : x
  2. Step 2: Convert to fraction form
    9,762.64/13,472.39 = 5,286.30/x
  3. Step 3: Cross multiply
    9,762.64x = 13,472.39 × 5,286.30
  4. Step 4: Simplify right side
    9,762.64x = 71,219,095.26
  5. Step 5: Solve for x
    x = 71,219,095.26/9,762.64
  6. Step 6: Final answer
    x = 7,295.07

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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.