Home / 3,140.98-4,708.58-1,408.66

Finding the Fourth Proportional to 3,140.98, 4,708.58 and 1,408.66

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Solution

The fourth proportional to 3,140.98, 4,708.58 and 1,408.66 is: 2,111.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.98 : 4,708.58 = 1,408.66 : x
  2. Step 2: Convert to fraction form
    3,140.98/4,708.58 = 1,408.66/x
  3. Step 3: Cross multiply
    3,140.98x = 4,708.58 × 1,408.66
  4. Step 4: Simplify right side
    3,140.98x = 6,632,788.30
  5. Step 5: Solve for x
    x = 6,632,788.30/3,140.98
  6. Step 6: Final answer
    x = 2,111.69

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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.