Home / 7,170.29-10,755.91-1,905.23

Finding the Fourth Proportional to 7,170.29, 10,755.91 and 1,905.23

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Solution

The fourth proportional to 7,170.29, 10,755.91 and 1,905.23 is: 2,857.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.29 : 10,755.91 = 1,905.23 : x
  2. Step 2: Convert to fraction form
    7,170.29/10,755.91 = 1,905.23/x
  3. Step 3: Cross multiply
    7,170.29x = 10,755.91 × 1,905.23
  4. Step 4: Simplify right side
    7,170.29x = 20,492,423.87
  5. Step 5: Solve for x
    x = 20,492,423.87/7,170.29
  6. Step 6: Final answer
    x = 2,857.96

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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.