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Finding the Fourth Proportional to 9,865, 13,614.24 and 5,673.52

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Solution

The fourth proportional to 9,865, 13,614.24 and 5,673.52 is: 7,829.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,865 : 13,614.24 = 5,673.52 : x
  2. Step 2: Convert to fraction form
    9,865/13,614.24 = 5,673.52/x
  3. Step 3: Cross multiply
    9,865x = 13,614.24 × 5,673.52
  4. Step 4: Simplify right side
    9,865x = 77,240,662.92
  5. Step 5: Solve for x
    x = 77,240,662.92/9,865
  6. Step 6: Final answer
    x = 7,829.77

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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.