Home / 2,453.40-3,385.68-1,405.44

Finding the Fourth Proportional to 2,453.40, 3,385.68 and 1,405.44

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Solution

The fourth proportional to 2,453.40, 3,385.68 and 1,405.44 is: 1,939.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.40 : 3,385.68 = 1,405.44 : x
  2. Step 2: Convert to fraction form
    2,453.40/3,385.68 = 1,405.44/x
  3. Step 3: Cross multiply
    2,453.40x = 3,385.68 × 1,405.44
  4. Step 4: Simplify right side
    2,453.40x = 4,758,370.10
  5. Step 5: Solve for x
    x = 4,758,370.10/2,453.40
  6. Step 6: Final answer
    x = 1,939.50

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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.