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Finding the Fourth Proportional to 8,931.86, 13,396.48 and 2,358.51

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Solution

The fourth proportional to 8,931.86, 13,396.48 and 2,358.51 is: 3,537.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.86 : 13,396.48 = 2,358.51 : x
  2. Step 2: Convert to fraction form
    8,931.86/13,396.48 = 2,358.51/x
  3. Step 3: Cross multiply
    8,931.86x = 13,396.48 × 2,358.51
  4. Step 4: Simplify right side
    8,931.86x = 31,595,732.04
  5. Step 5: Solve for x
    x = 31,595,732.04/8,931.86
  6. Step 6: Final answer
    x = 3,537.42

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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.