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Finding the Fourth Proportional to 7,005.41, 9,666.87 and 3,861.59

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Solution

The fourth proportional to 7,005.41, 9,666.87 and 3,861.59 is: 5,328.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,005.41 : 9,666.87 = 3,861.59 : x
  2. Step 2: Convert to fraction form
    7,005.41/9,666.87 = 3,861.59/x
  3. Step 3: Cross multiply
    7,005.41x = 9,666.87 × 3,861.59
  4. Step 4: Simplify right side
    7,005.41x = 37,329,440.19
  5. Step 5: Solve for x
    x = 37,329,440.19/7,005.41
  6. Step 6: Final answer
    x = 5,328.66

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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.