Home / 5,178.29-7,762.78-1,889.09

Finding the Fourth Proportional to 5,178.29, 7,762.78 and 1,889.09

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Solution

The fourth proportional to 5,178.29, 7,762.78 and 1,889.09 is: 2,831.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.29 : 7,762.78 = 1,889.09 : x
  2. Step 2: Convert to fraction form
    5,178.29/7,762.78 = 1,889.09/x
  3. Step 3: Cross multiply
    5,178.29x = 7,762.78 × 1,889.09
  4. Step 4: Simplify right side
    5,178.29x = 14,664,546.53
  5. Step 5: Solve for x
    x = 14,664,546.53/5,178.29
  6. Step 6: Final answer
    x = 2,831.93

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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.