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Finding the Fourth Proportional to 28,656.92, 42,986.54 and 7,310.19

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Solution

The fourth proportional to 28,656.92, 42,986.54 and 7,310.19 is: 10,965.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,656.92 : 42,986.54 = 7,310.19 : x
  2. Step 2: Convert to fraction form
    28,656.92/42,986.54 = 7,310.19/x
  3. Step 3: Cross multiply
    28,656.92x = 42,986.54 × 7,310.19
  4. Step 4: Simplify right side
    28,656.92x = 314,239,738.29
  5. Step 5: Solve for x
    x = 314,239,738.29/28,656.92
  6. Step 6: Final answer
    x = 10,965.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.