Home / 5,318.72-7,339.70-2,960.80

Finding the Fourth Proportional to 5,318.72, 7,339.70 and 2,960.80

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Solution

The fourth proportional to 5,318.72, 7,339.70 and 2,960.80 is: 4,085.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.72 : 7,339.70 = 2,960.80 : x
  2. Step 2: Convert to fraction form
    5,318.72/7,339.70 = 2,960.80/x
  3. Step 3: Cross multiply
    5,318.72x = 7,339.70 × 2,960.80
  4. Step 4: Simplify right side
    5,318.72x = 21,731,383.76
  5. Step 5: Solve for x
    x = 21,731,383.76/5,318.72
  6. Step 6: Final answer
    x = 4,085.83

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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.