Home / 5,157.58-7,117.38-2,799.70

Finding the Fourth Proportional to 5,157.58, 7,117.38 and 2,799.70

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Solution

The fourth proportional to 5,157.58, 7,117.38 and 2,799.70 is: 3,863.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.58 : 7,117.38 = 2,799.70 : x
  2. Step 2: Convert to fraction form
    5,157.58/7,117.38 = 2,799.70/x
  3. Step 3: Cross multiply
    5,157.58x = 7,117.38 × 2,799.70
  4. Step 4: Simplify right side
    5,157.58x = 19,926,528.79
  5. Step 5: Solve for x
    x = 19,926,528.79/5,157.58
  6. Step 6: Final answer
    x = 3,863.54

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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.