Home / 7,487.20-11,238.90-4,206.70

Finding the Fourth Proportional to 7,487.20, 11,238.90 and 4,206.70

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Solution

The fourth proportional to 7,487.20, 11,238.90 and 4,206.70 is: 6,314.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,487.20 : 11,238.90 = 4,206.70 : x
  2. Step 2: Convert to fraction form
    7,487.20/11,238.90 = 4,206.70/x
  3. Step 3: Cross multiply
    7,487.20x = 11,238.90 × 4,206.70
  4. Step 4: Simplify right side
    7,487.20x = 47,278,680.63
  5. Step 5: Solve for x
    x = 47,278,680.63/7,487.20
  6. Step 6: Final answer
    x = 6,314.60

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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.