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Finding the Fourth Proportional to 7,382.63, 10,187.78 and 4,195.87

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Solution

The fourth proportional to 7,382.63, 10,187.78 and 4,195.87 is: 5,790.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,382.63 : 10,187.78 = 4,195.87 : x
  2. Step 2: Convert to fraction form
    7,382.63/10,187.78 = 4,195.87/x
  3. Step 3: Cross multiply
    7,382.63x = 10,187.78 × 4,195.87
  4. Step 4: Simplify right side
    7,382.63x = 42,746,575.51
  5. Step 5: Solve for x
    x = 42,746,575.51/7,382.63
  6. Step 6: Final answer
    x = 5,790.15

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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.