Home / 7,439.78-11,152.83-3,690.74

Finding the Fourth Proportional to 7,439.78, 11,152.83 and 3,690.74

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Solution

The fourth proportional to 7,439.78, 11,152.83 and 3,690.74 is: 5,532.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,439.78 : 11,152.83 = 3,690.74 : x
  2. Step 2: Convert to fraction form
    7,439.78/11,152.83 = 3,690.74/x
  3. Step 3: Cross multiply
    7,439.78x = 11,152.83 × 3,690.74
  4. Step 4: Simplify right side
    7,439.78x = 41,162,195.79
  5. Step 5: Solve for x
    x = 41,162,195.79/7,439.78
  6. Step 6: Final answer
    x = 5,532.72

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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.