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Finding the Fourth Proportional to 7,875.42, 11,810.97 and 2,943.42

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Solution

The fourth proportional to 7,875.42, 11,810.97 and 2,943.42 is: 4,414.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.42 : 11,810.97 = 2,943.42 : x
  2. Step 2: Convert to fraction form
    7,875.42/11,810.97 = 2,943.42/x
  3. Step 3: Cross multiply
    7,875.42x = 11,810.97 × 2,943.42
  4. Step 4: Simplify right side
    7,875.42x = 34,764,645.32
  5. Step 5: Solve for x
    x = 34,764,645.32/7,875.42
  6. Step 6: Final answer
    x = 4,414.32

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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.