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Finding the Fourth Proportional to 5,263.90, 7,889.15 and 2,799.90

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Solution

The fourth proportional to 5,263.90, 7,889.15 and 2,799.90 is: 4,196.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,263.90 : 7,889.15 = 2,799.90 : x
  2. Step 2: Convert to fraction form
    5,263.90/7,889.15 = 2,799.90/x
  3. Step 3: Cross multiply
    5,263.90x = 7,889.15 × 2,799.90
  4. Step 4: Simplify right side
    5,263.90x = 22,088,831.09
  5. Step 5: Solve for x
    x = 22,088,831.09/5,263.90
  6. Step 6: Final answer
    x = 4,196.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.