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Finding the Fourth Proportional to 7,689.63, 11,534.31 and 2,495.51

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Solution

The fourth proportional to 7,689.63, 11,534.31 and 2,495.51 is: 3,743.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689.63 : 11,534.31 = 2,495.51 : x
  2. Step 2: Convert to fraction form
    7,689.63/11,534.31 = 2,495.51/x
  3. Step 3: Cross multiply
    7,689.63x = 11,534.31 × 2,495.51
  4. Step 4: Simplify right side
    7,689.63x = 28,783,928.28
  5. Step 5: Solve for x
    x = 28,783,928.28/7,689.63
  6. Step 6: Final answer
    x = 3,743.21

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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.