Home / 1,806.34-2,490.78-1,247.08

Finding the Fourth Proportional to 1,806.34, 2,490.78 and 1,247.08

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Solution

The fourth proportional to 1,806.34, 2,490.78 and 1,247.08 is: 1,719.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.34 : 2,490.78 = 1,247.08 : x
  2. Step 2: Convert to fraction form
    1,806.34/2,490.78 = 1,247.08/x
  3. Step 3: Cross multiply
    1,806.34x = 2,490.78 × 1,247.08
  4. Step 4: Simplify right side
    1,806.34x = 3,106,201.92
  5. Step 5: Solve for x
    x = 3,106,201.92/1,806.34
  6. Step 6: Final answer
    x = 1,719.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.