Home / 2,561.76-3,842.64-1,328.40

Finding the Fourth Proportional to 2,561.76, 3,842.64 and 1,328.40

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Solution

The fourth proportional to 2,561.76, 3,842.64 and 1,328.40 is: 1,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,561.76 : 3,842.64 = 1,328.40 : x
  2. Step 2: Convert to fraction form
    2,561.76/3,842.64 = 1,328.40/x
  3. Step 3: Cross multiply
    2,561.76x = 3,842.64 × 1,328.40
  4. Step 4: Simplify right side
    2,561.76x = 5,104,562.98
  5. Step 5: Solve for x
    x = 5,104,562.98/2,561.76
  6. Step 6: Final answer
    x = 1,992.60

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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.