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Finding the Fourth Proportional to 2,458.86, 3,688.44 and 997.80

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Solution

The fourth proportional to 2,458.86, 3,688.44 and 997.80 is: 1,496.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,458.86 : 3,688.44 = 997.80 : x
  2. Step 2: Convert to fraction form
    2,458.86/3,688.44 = 997.80/x
  3. Step 3: Cross multiply
    2,458.86x = 3,688.44 × 997.80
  4. Step 4: Simplify right side
    2,458.86x = 3,680,325.43
  5. Step 5: Solve for x
    x = 3,680,325.43/2,458.86
  6. Step 6: Final answer
    x = 1,496.76

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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.