Home / 2,606.20-3,909.30-1,307.20

Finding the Fourth Proportional to 2,606.20, 3,909.30 and 1,307.20

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Solution

The fourth proportional to 2,606.20, 3,909.30 and 1,307.20 is: 1,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,606.20 : 3,909.30 = 1,307.20 : x
  2. Step 2: Convert to fraction form
    2,606.20/3,909.30 = 1,307.20/x
  3. Step 3: Cross multiply
    2,606.20x = 3,909.30 × 1,307.20
  4. Step 4: Simplify right side
    2,606.20x = 5,110,236.96
  5. Step 5: Solve for x
    x = 5,110,236.96/2,606.20
  6. Step 6: Final answer
    x = 1,960.80

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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.