Home / 5,157.60-7,117.50-2,799.72

Finding the Fourth Proportional to 5,157.60, 7,117.50 and 2,799.72

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Solution

The fourth proportional to 5,157.60, 7,117.50 and 2,799.72 is: 3,863.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.60 : 7,117.50 = 2,799.72 : x
  2. Step 2: Convert to fraction form
    5,157.60/7,117.50 = 2,799.72/x
  3. Step 3: Cross multiply
    5,157.60x = 7,117.50 × 2,799.72
  4. Step 4: Simplify right side
    5,157.60x = 19,927,007.10
  5. Step 5: Solve for x
    x = 19,927,007.10/5,157.60
  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.