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Finding the Fourth Proportional to 7,003.59, 9,664.95 and 3,859.77

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Solution

The fourth proportional to 7,003.59, 9,664.95 and 3,859.77 is: 5,326.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,003.59 : 9,664.95 = 3,859.77 : x
  2. Step 2: Convert to fraction form
    7,003.59/9,664.95 = 3,859.77/x
  3. Step 3: Cross multiply
    7,003.59x = 9,664.95 × 3,859.77
  4. Step 4: Simplify right side
    7,003.59x = 37,304,484.06
  5. Step 5: Solve for x
    x = 37,304,484.06/7,003.59
  6. Step 6: Final answer
    x = 5,326.48

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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.