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Finding the Fourth Proportional to 9,855.77, 13,601.01 and 5,379.63

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Solution

The fourth proportional to 9,855.77, 13,601.01 and 5,379.63 is: 7,423.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,855.77 : 13,601.01 = 5,379.63 : x
  2. Step 2: Convert to fraction form
    9,855.77/13,601.01 = 5,379.63/x
  3. Step 3: Cross multiply
    9,855.77x = 13,601.01 × 5,379.63
  4. Step 4: Simplify right side
    9,855.77x = 73,168,401.43
  5. Step 5: Solve for x
    x = 73,168,401.43/9,855.77
  6. Step 6: Final answer
    x = 7,423.92

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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.