Home / 5,157.62-7,117.47-2,799.76

Finding the Fourth Proportional to 5,157.62, 7,117.47 and 2,799.76

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Solution

The fourth proportional to 5,157.62, 7,117.47 and 2,799.76 is: 3,863.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.62 : 7,117.47 = 2,799.76 : x
  2. Step 2: Convert to fraction form
    5,157.62/7,117.47 = 2,799.76/x
  3. Step 3: Cross multiply
    5,157.62x = 7,117.47 × 2,799.76
  4. Step 4: Simplify right side
    5,157.62x = 19,927,190.01
  5. Step 5: Solve for x
    x = 19,927,190.01/5,157.62
  6. Step 6: Final answer
    x = 3,863.64

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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.