Home / 5,175.58-7,142.28-2,817.74

Finding the Fourth Proportional to 5,175.58, 7,142.28 and 2,817.74

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Solution

The fourth proportional to 5,175.58, 7,142.28 and 2,817.74 is: 3,888.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.58 : 7,142.28 = 2,817.74 : x
  2. Step 2: Convert to fraction form
    5,175.58/7,142.28 = 2,817.74/x
  3. Step 3: Cross multiply
    5,175.58x = 7,142.28 × 2,817.74
  4. Step 4: Simplify right side
    5,175.58x = 20,125,088.05
  5. Step 5: Solve for x
    x = 20,125,088.05/5,175.58
  6. Step 6: Final answer
    x = 3,888.47

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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.