Home / 5,148.39-7,722.57-1,861.47

Finding the Fourth Proportional to 5,148.39, 7,722.57 and 1,861.47

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Solution

The fourth proportional to 5,148.39, 7,722.57 and 1,861.47 is: 2,792.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.39 : 7,722.57 = 1,861.47 : x
  2. Step 2: Convert to fraction form
    5,148.39/7,722.57 = 1,861.47/x
  3. Step 3: Cross multiply
    5,148.39x = 7,722.57 × 1,861.47
  4. Step 4: Simplify right side
    5,148.39x = 14,375,332.38
  5. Step 5: Solve for x
    x = 14,375,332.38/5,148.39
  6. Step 6: Final answer
    x = 2,792.20

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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.