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Finding the Fourth Proportional to 2,976.99, 4,465.31 and 896.96

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Solution

The fourth proportional to 2,976.99, 4,465.31 and 896.96 is: 1,345.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976.99 : 4,465.31 = 896.96 : x
  2. Step 2: Convert to fraction form
    2,976.99/4,465.31 = 896.96/x
  3. Step 3: Cross multiply
    2,976.99x = 4,465.31 × 896.96
  4. Step 4: Simplify right side
    2,976.99x = 4,005,177.65
  5. Step 5: Solve for x
    x = 4,005,177.65/2,976.99
  6. Step 6: Final answer
    x = 1,345.38

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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.