Home / 5,148.60-7,722.90-2,807.70

Finding the Fourth Proportional to 5,148.60, 7,722.90 and 2,807.70

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Solution

The fourth proportional to 5,148.60, 7,722.90 and 2,807.70 is: 4,211.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.60 : 7,722.90 = 2,807.70 : x
  2. Step 2: Convert to fraction form
    5,148.60/7,722.90 = 2,807.70/x
  3. Step 3: Cross multiply
    5,148.60x = 7,722.90 × 2,807.70
  4. Step 4: Simplify right side
    5,148.60x = 21,683,586.33
  5. Step 5: Solve for x
    x = 21,683,586.33/5,148.60
  6. Step 6: Final answer
    x = 4,211.55

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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.