Home / 5,172.42-7,758.78-1,887.96

Finding the Fourth Proportional to 5,172.42, 7,758.78 and 1,887.96

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Solution

The fourth proportional to 5,172.42, 7,758.78 and 1,887.96 is: 2,831.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.42 : 7,758.78 = 1,887.96 : x
  2. Step 2: Convert to fraction form
    5,172.42/7,758.78 = 1,887.96/x
  3. Step 3: Cross multiply
    5,172.42x = 7,758.78 × 1,887.96
  4. Step 4: Simplify right side
    5,172.42x = 14,648,266.29
  5. Step 5: Solve for x
    x = 14,648,266.29/5,172.42
  6. Step 6: Final answer
    x = 2,831.99

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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.