Home / 2,313.98-3,191.27-1,640.45

Finding the Fourth Proportional to 2,313.98, 3,191.27 and 1,640.45

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Solution

The fourth proportional to 2,313.98, 3,191.27 and 1,640.45 is: 2,262.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.98 : 3,191.27 = 1,640.45 : x
  2. Step 2: Convert to fraction form
    2,313.98/3,191.27 = 1,640.45/x
  3. Step 3: Cross multiply
    2,313.98x = 3,191.27 × 1,640.45
  4. Step 4: Simplify right side
    2,313.98x = 5,235,118.87
  5. Step 5: Solve for x
    x = 5,235,118.87/2,313.98
  6. Step 6: Final answer
    x = 2,262.39

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1.5x scale

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.