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Finding the Fourth Proportional to 6,859.55, 9,459.62 and 4,171.22

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Solution

The fourth proportional to 6,859.55, 9,459.62 and 4,171.22 is: 5,752.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,859.55 : 9,459.62 = 4,171.22 : x
  2. Step 2: Convert to fraction form
    6,859.55/9,459.62 = 4,171.22/x
  3. Step 3: Cross multiply
    6,859.55x = 9,459.62 × 4,171.22
  4. Step 4: Simplify right side
    6,859.55x = 39,458,215.77
  5. Step 5: Solve for x
    x = 39,458,215.77/6,859.55
  6. Step 6: Final answer
    x = 5,752.31

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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.