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Finding the Fourth Proportional to 9,328.01, 13,991.79 and 3,779.87

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Solution

The fourth proportional to 9,328.01, 13,991.79 and 3,779.87 is: 5,669.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,328.01 : 13,991.79 = 3,779.87 : x
  2. Step 2: Convert to fraction form
    9,328.01/13,991.79 = 3,779.87/x
  3. Step 3: Cross multiply
    9,328.01x = 13,991.79 × 3,779.87
  4. Step 4: Simplify right side
    9,328.01x = 52,887,070.22
  5. Step 5: Solve for x
    x = 52,887,070.22/9,328.01
  6. Step 6: Final answer
    x = 5,669.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.