Home / 9,960.40-14,939.70-3,386.80

Finding the Fourth Proportional to 9,960.40, 14,939.70 and 3,386.80

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Solution

The fourth proportional to 9,960.40, 14,939.70 and 3,386.80 is: 5,079.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,960.40 : 14,939.70 = 3,386.80 : x
  2. Step 2: Convert to fraction form
    9,960.40/14,939.70 = 3,386.80/x
  3. Step 3: Cross multiply
    9,960.40x = 14,939.70 × 3,386.80
  4. Step 4: Simplify right side
    9,960.40x = 50,597,775.96
  5. Step 5: Solve for x
    x = 50,597,775.96/9,960.40
  6. Step 6: Final answer
    x = 5,079.89

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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.