Home / 5,110.98-7,051.80-3,121.41

Finding the Fourth Proportional to 5,110.98, 7,051.80 and 3,121.41

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Solution

The fourth proportional to 5,110.98, 7,051.80 and 3,121.41 is: 4,306.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.98 : 7,051.80 = 3,121.41 : x
  2. Step 2: Convert to fraction form
    5,110.98/7,051.80 = 3,121.41/x
  3. Step 3: Cross multiply
    5,110.98x = 7,051.80 × 3,121.41
  4. Step 4: Simplify right side
    5,110.98x = 22,011,559.04
  5. Step 5: Solve for x
    x = 22,011,559.04/5,110.98
  6. Step 6: Final answer
    x = 4,306.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.