Home / 5,135.58-7,078.59-4,071.47

Finding the Fourth Proportional to 5,135.58, 7,078.59 and 4,071.47

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Solution

The fourth proportional to 5,135.58, 7,078.59 and 4,071.47 is: 5,611.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.58 : 7,078.59 = 4,071.47 : x
  2. Step 2: Convert to fraction form
    5,135.58/7,078.59 = 4,071.47/x
  3. Step 3: Cross multiply
    5,135.58x = 7,078.59 × 4,071.47
  4. Step 4: Simplify right side
    5,135.58x = 28,820,231.43
  5. Step 5: Solve for x
    x = 28,820,231.43/5,135.58
  6. Step 6: Final answer
    x = 5,611.88

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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.