Home / 9,170.85-13,755.10-2,931.51

Finding the Fourth Proportional to 9,170.85, 13,755.10 and 2,931.51

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Solution

The fourth proportional to 9,170.85, 13,755.10 and 2,931.51 is: 4,396.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.85 : 13,755.10 = 2,931.51 : x
  2. Step 2: Convert to fraction form
    9,170.85/13,755.10 = 2,931.51/x
  3. Step 3: Cross multiply
    9,170.85x = 13,755.10 × 2,931.51
  4. Step 4: Simplify right side
    9,170.85x = 40,323,213.20
  5. Step 5: Solve for x
    x = 40,323,213.20/9,170.85
  6. Step 6: Final answer
    x = 4,396.89

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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.