Home / 5,157.56-7,117.32-2,799.68

Finding the Fourth Proportional to 5,157.56, 7,117.32 and 2,799.68

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Solution

The fourth proportional to 5,157.56, 7,117.32 and 2,799.68 is: 3,863.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.56 : 7,117.32 = 2,799.68 : x
  2. Step 2: Convert to fraction form
    5,157.56/7,117.32 = 2,799.68/x
  3. Step 3: Cross multiply
    5,157.56x = 7,117.32 × 2,799.68
  4. Step 4: Simplify right side
    5,157.56x = 19,926,218.46
  5. Step 5: Solve for x
    x = 19,926,218.46/5,157.56
  6. Step 6: Final answer
    x = 3,863.50

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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.