Home / 5,110.28-7,051.66-3,121.32

Finding the Fourth Proportional to 5,110.28, 7,051.66 and 3,121.32

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Solution

The fourth proportional to 5,110.28, 7,051.66 and 3,121.32 is: 4,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.28 : 7,051.66 = 3,121.32 : x
  2. Step 2: Convert to fraction form
    5,110.28/7,051.66 = 3,121.32/x
  3. Step 3: Cross multiply
    5,110.28x = 7,051.66 × 3,121.32
  4. Step 4: Simplify right side
    5,110.28x = 22,010,487.39
  5. Step 5: Solve for x
    x = 22,010,487.39/5,110.28
  6. Step 6: Final answer
    x = 4,307.10

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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.