Home / 6,611.42-9,120.39-5,036.78

Finding the Fourth Proportional to 6,611.42, 9,120.39 and 5,036.78

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Solution

The fourth proportional to 6,611.42, 9,120.39 and 5,036.78 is: 6,948.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.42 : 9,120.39 = 5,036.78 : x
  2. Step 2: Convert to fraction form
    6,611.42/9,120.39 = 5,036.78/x
  3. Step 3: Cross multiply
    6,611.42x = 9,120.39 × 5,036.78
  4. Step 4: Simplify right side
    6,611.42x = 45,937,397.94
  5. Step 5: Solve for x
    x = 45,937,397.94/6,611.42
  6. Step 6: Final answer
    x = 6,948.19

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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.