Home / 8,931.84-13,398.40-3,089.28

Finding the Fourth Proportional to 8,931.84, 13,398.40 and 3,089.28

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Solution

The fourth proportional to 8,931.84, 13,398.40 and 3,089.28 is: 4,634.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.84 : 13,398.40 = 3,089.28 : x
  2. Step 2: Convert to fraction form
    8,931.84/13,398.40 = 3,089.28/x
  3. Step 3: Cross multiply
    8,931.84x = 13,398.40 × 3,089.28
  4. Step 4: Simplify right side
    8,931.84x = 41,391,409.15
  5. Step 5: Solve for x
    x = 41,391,409.15/8,931.84
  6. Step 6: Final answer
    x = 4,634.14

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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.