Home / 5,157.60-7,117.45-2,799.74

Finding the Fourth Proportional to 5,157.60, 7,117.45 and 2,799.74

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Solution

The fourth proportional to 5,157.60, 7,117.45 and 2,799.74 is: 3,863.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.60 : 7,117.45 = 2,799.74 : x
  2. Step 2: Convert to fraction form
    5,157.60/7,117.45 = 2,799.74/x
  3. Step 3: Cross multiply
    5,157.60x = 7,117.45 × 2,799.74
  4. Step 4: Simplify right side
    5,157.60x = 19,926,995.46
  5. Step 5: Solve for x
    x = 19,926,995.46/5,157.60
  6. Step 6: Final answer
    x = 3,863.62

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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.