Home / 7,491.20-11,227.80-3,106.40

Finding the Fourth Proportional to 7,491.20, 11,227.80 and 3,106.40

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Solution

The fourth proportional to 7,491.20, 11,227.80 and 3,106.40 is: 4,655.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,491.20 : 11,227.80 = 3,106.40 : x
  2. Step 2: Convert to fraction form
    7,491.20/11,227.80 = 3,106.40/x
  3. Step 3: Cross multiply
    7,491.20x = 11,227.80 × 3,106.40
  4. Step 4: Simplify right side
    7,491.20x = 34,878,037.92
  5. Step 5: Solve for x
    x = 34,878,037.92/7,491.20
  6. Step 6: Final answer
    x = 4,655.87

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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.