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Finding the Fourth Proportional to 3,571.92, 4,929.12 and 2,525.40

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Solution

The fourth proportional to 3,571.92, 4,929.12 and 2,525.40 is: 3,484.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.92 : 4,929.12 = 2,525.40 : x
  2. Step 2: Convert to fraction form
    3,571.92/4,929.12 = 2,525.40/x
  3. Step 3: Cross multiply
    3,571.92x = 4,929.12 × 2,525.40
  4. Step 4: Simplify right side
    3,571.92x = 12,447,999.65
  5. Step 5: Solve for x
    x = 12,447,999.65/3,571.92
  6. Step 6: Final answer
    x = 3,484.96

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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.