Home / 6,780.40-10,173.18-3,491.39

Finding the Fourth Proportional to 6,780.40, 10,173.18 and 3,491.39

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Solution

The fourth proportional to 6,780.40, 10,173.18 and 3,491.39 is: 5,238.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,780.40 : 10,173.18 = 3,491.39 : x
  2. Step 2: Convert to fraction form
    6,780.40/10,173.18 = 3,491.39/x
  3. Step 3: Cross multiply
    6,780.40x = 10,173.18 × 3,491.39
  4. Step 4: Simplify right side
    6,780.40x = 35,518,538.92
  5. Step 5: Solve for x
    x = 35,518,538.92/6,780.40
  6. Step 6: Final answer
    x = 5,238.41

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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.