Home / 2,140.98-3,205.38-1,408.34

Finding the Fourth Proportional to 2,140.98, 3,205.38 and 1,408.34

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Solution

The fourth proportional to 2,140.98, 3,205.38 and 1,408.34 is: 2,108.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.98 : 3,205.38 = 1,408.34 : x
  2. Step 2: Convert to fraction form
    2,140.98/3,205.38 = 1,408.34/x
  3. Step 3: Cross multiply
    2,140.98x = 3,205.38 × 1,408.34
  4. Step 4: Simplify right side
    2,140.98x = 4,514,264.87
  5. Step 5: Solve for x
    x = 4,514,264.87/2,140.98
  6. Step 6: Final answer
    x = 2,108.50

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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.