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Finding the Fourth Proportional to 5,328.94, 7,990.98 and 2,556.92

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Solution

The fourth proportional to 5,328.94, 7,990.98 and 2,556.92 is: 3,834.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.94 : 7,990.98 = 2,556.92 : x
  2. Step 2: Convert to fraction form
    5,328.94/7,990.98 = 2,556.92/x
  3. Step 3: Cross multiply
    5,328.94x = 7,990.98 × 2,556.92
  4. Step 4: Simplify right side
    5,328.94x = 20,432,285.84
  5. Step 5: Solve for x
    x = 20,432,285.84/5,328.94
  6. Step 6: Final answer
    x = 3,834.21

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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.