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Finding the Fourth Proportional to 8,735.52, 12,053.64 and 5,378.88

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Solution

The fourth proportional to 8,735.52, 12,053.64 and 5,378.88 is: 7,422.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,735.52 : 12,053.64 = 5,378.88 : x
  2. Step 2: Convert to fraction form
    8,735.52/12,053.64 = 5,378.88/x
  3. Step 3: Cross multiply
    8,735.52x = 12,053.64 × 5,378.88
  4. Step 4: Simplify right side
    8,735.52x = 64,835,083.12
  5. Step 5: Solve for x
    x = 64,835,083.12/8,735.52
  6. Step 6: Final answer
    x = 7,422.01

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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.