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Finding the Fourth Proportional to 2,458.64, 3,686.13 and 997.67

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Solution

The fourth proportional to 2,458.64, 3,686.13 and 997.67 is: 1,495.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,458.64 : 3,686.13 = 997.67 : x
  2. Step 2: Convert to fraction form
    2,458.64/3,686.13 = 997.67/x
  3. Step 3: Cross multiply
    2,458.64x = 3,686.13 × 997.67
  4. Step 4: Simplify right side
    2,458.64x = 3,677,522.89
  5. Step 5: Solve for x
    x = 3,677,522.89/2,458.64
  6. Step 6: Final answer
    x = 1,495.76

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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.