Home / 2,318.69-3,476.61-857.45

Finding the Fourth Proportional to 2,318.69, 3,476.61 and 857.45

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Solution

The fourth proportional to 2,318.69, 3,476.61 and 857.45 is: 1,285.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.69 : 3,476.61 = 857.45 : x
  2. Step 2: Convert to fraction form
    2,318.69/3,476.61 = 857.45/x
  3. Step 3: Cross multiply
    2,318.69x = 3,476.61 × 857.45
  4. Step 4: Simplify right side
    2,318.69x = 2,981,019.24
  5. Step 5: Solve for x
    x = 2,981,019.24/2,318.69
  6. Step 6: Final answer
    x = 1,285.65

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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.