Home / 3,091.40-4,637.10-1,242.80

Finding the Fourth Proportional to 3,091.40, 4,637.10 and 1,242.80

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Solution

The fourth proportional to 3,091.40, 4,637.10 and 1,242.80 is: 1,864.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.40 : 4,637.10 = 1,242.80 : x
  2. Step 2: Convert to fraction form
    3,091.40/4,637.10 = 1,242.80/x
  3. Step 3: Cross multiply
    3,091.40x = 4,637.10 × 1,242.80
  4. Step 4: Simplify right side
    3,091.40x = 5,762,987.88
  5. Step 5: Solve for x
    x = 5,762,987.88/3,091.40
  6. Step 6: Final answer
    x = 1,864.20

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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.