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Finding the Fourth Proportional to 2,319.46, 3,476.99 and 857.62

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Solution

The fourth proportional to 2,319.46, 3,476.99 and 857.62 is: 1,285.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.46 : 3,476.99 = 857.62 : x
  2. Step 2: Convert to fraction form
    2,319.46/3,476.99 = 857.62/x
  3. Step 3: Cross multiply
    2,319.46x = 3,476.99 × 857.62
  4. Step 4: Simplify right side
    2,319.46x = 2,981,936.16
  5. Step 5: Solve for x
    x = 2,981,936.16/2,319.46
  6. Step 6: Final answer
    x = 1,285.62

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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.