Home / 3,100.75-4,651.16-1,020.91

Finding the Fourth Proportional to 3,100.75, 4,651.16 and 1,020.91

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Solution

The fourth proportional to 3,100.75, 4,651.16 and 1,020.91 is: 1,531.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.75 : 4,651.16 = 1,020.91 : x
  2. Step 2: Convert to fraction form
    3,100.75/4,651.16 = 1,020.91/x
  3. Step 3: Cross multiply
    3,100.75x = 4,651.16 × 1,020.91
  4. Step 4: Simplify right side
    3,100.75x = 4,748,415.76
  5. Step 5: Solve for x
    x = 4,748,415.76/3,100.75
  6. Step 6: Final answer
    x = 1,531.38

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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.