Home / 2,987.92-4,472.62-2,545.05

Finding the Fourth Proportional to 2,987.92, 4,472.62 and 2,545.05

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Solution

The fourth proportional to 2,987.92, 4,472.62 and 2,545.05 is: 3,809.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.92 : 4,472.62 = 2,545.05 : x
  2. Step 2: Convert to fraction form
    2,987.92/4,472.62 = 2,545.05/x
  3. Step 3: Cross multiply
    2,987.92x = 4,472.62 × 2,545.05
  4. Step 4: Simplify right side
    2,987.92x = 11,383,051.94
  5. Step 5: Solve for x
    x = 11,383,051.94/2,987.92
  6. Step 6: Final answer
    x = 3,809.69

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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.