Home / 2,347.79-3,239.90-1,299.85

Finding the Fourth Proportional to 2,347.79, 3,239.90 and 1,299.85

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Solution

The fourth proportional to 2,347.79, 3,239.90 and 1,299.85 is: 1,793.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.79 : 3,239.90 = 1,299.85 : x
  2. Step 2: Convert to fraction form
    2,347.79/3,239.90 = 1,299.85/x
  3. Step 3: Cross multiply
    2,347.79x = 3,239.90 × 1,299.85
  4. Step 4: Simplify right side
    2,347.79x = 4,211,374.29
  5. Step 5: Solve for x
    x = 4,211,374.29/2,347.79
  6. Step 6: Final answer
    x = 1,793.76

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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.