Home / 1,947.34-2,686.26-1,247.50

Finding the Fourth Proportional to 1,947.34, 2,686.26 and 1,247.50

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Solution

The fourth proportional to 1,947.34, 2,686.26 and 1,247.50 is: 1,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.34 : 2,686.26 = 1,247.50 : x
  2. Step 2: Convert to fraction form
    1,947.34/2,686.26 = 1,247.50/x
  3. Step 3: Cross multiply
    1,947.34x = 2,686.26 × 1,247.50
  4. Step 4: Simplify right side
    1,947.34x = 3,351,109.35
  5. Step 5: Solve for x
    x = 3,351,109.35/1,947.34
  6. Step 6: Final answer
    x = 1,720.87

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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.