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Finding the Fourth Proportional to 6,899.49, 9,521.37 and 3,755.70

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Solution

The fourth proportional to 6,899.49, 9,521.37 and 3,755.70 is: 5,182.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,899.49 : 9,521.37 = 3,755.70 : x
  2. Step 2: Convert to fraction form
    6,899.49/9,521.37 = 3,755.70/x
  3. Step 3: Cross multiply
    6,899.49x = 9,521.37 × 3,755.70
  4. Step 4: Simplify right side
    6,899.49x = 35,759,409.31
  5. Step 5: Solve for x
    x = 35,759,409.31/6,899.49
  6. Step 6: Final answer
    x = 5,182.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.