Home / 3,091.21-4,637.12-899.35

Finding the Fourth Proportional to 3,091.21, 4,637.12 and 899.35

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Solution

The fourth proportional to 3,091.21, 4,637.12 and 899.35 is: 1,349.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.21 : 4,637.12 = 899.35 : x
  2. Step 2: Convert to fraction form
    3,091.21/4,637.12 = 899.35/x
  3. Step 3: Cross multiply
    3,091.21x = 4,637.12 × 899.35
  4. Step 4: Simplify right side
    3,091.21x = 4,170,377.78
  5. Step 5: Solve for x
    x = 4,170,377.78/3,091.21
  6. Step 6: Final answer
    x = 1,349.11

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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.