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Finding the Fourth Proportional to 9,939.77, 14,909.69 and 3,370.60

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Solution

The fourth proportional to 9,939.77, 14,909.69 and 3,370.60 is: 5,055.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,939.77 : 14,909.69 = 3,370.60 : x
  2. Step 2: Convert to fraction form
    9,939.77/14,909.69 = 3,370.60/x
  3. Step 3: Cross multiply
    9,939.77x = 14,909.69 × 3,370.60
  4. Step 4: Simplify right side
    9,939.77x = 50,254,601.11
  5. Step 5: Solve for x
    x = 50,254,601.11/9,939.77
  6. Step 6: Final answer
    x = 5,055.91

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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.