Home / 5,456.45-8,178.21-2,490.35

Finding the Fourth Proportional to 5,456.45, 8,178.21 and 2,490.35

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Solution

The fourth proportional to 5,456.45, 8,178.21 and 2,490.35 is: 3,732.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,456.45 : 8,178.21 = 2,490.35 : x
  2. Step 2: Convert to fraction form
    5,456.45/8,178.21 = 2,490.35/x
  3. Step 3: Cross multiply
    5,456.45x = 8,178.21 × 2,490.35
  4. Step 4: Simplify right side
    5,456.45x = 20,366,564.38
  5. Step 5: Solve for x
    x = 20,366,564.38/5,456.45
  6. Step 6: Final answer
    x = 3,732.57

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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.