Home / 3,139.09-4,708.77-1,408.93

Finding the Fourth Proportional to 3,139.09, 4,708.77 and 1,408.93

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Solution

The fourth proportional to 3,139.09, 4,708.77 and 1,408.93 is: 2,113.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.09 : 4,708.77 = 1,408.93 : x
  2. Step 2: Convert to fraction form
    3,139.09/4,708.77 = 1,408.93/x
  3. Step 3: Cross multiply
    3,139.09x = 4,708.77 × 1,408.93
  4. Step 4: Simplify right side
    3,139.09x = 6,634,327.32
  5. Step 5: Solve for x
    x = 6,634,327.32/3,139.09
  6. Step 6: Final answer
    x = 2,113.46

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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.