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Finding the Fourth Proportional to 7,801.55, 11,754.94 and 6,445.26

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Solution

The fourth proportional to 7,801.55, 11,754.94 and 6,445.26 is: 9,711.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,801.55 : 11,754.94 = 6,445.26 : x
  2. Step 2: Convert to fraction form
    7,801.55/11,754.94 = 6,445.26/x
  3. Step 3: Cross multiply
    7,801.55x = 11,754.94 × 6,445.26
  4. Step 4: Simplify right side
    7,801.55x = 75,763,644.58
  5. Step 5: Solve for x
    x = 75,763,644.58/7,801.55
  6. Step 6: Final answer
    x = 9,711.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.