Home / 2,615.08-3,920.56-1,790.84

Finding the Fourth Proportional to 2,615.08, 3,920.56 and 1,790.84

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Solution

The fourth proportional to 2,615.08, 3,920.56 and 1,790.84 is: 2,684.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.08 : 3,920.56 = 1,790.84 : x
  2. Step 2: Convert to fraction form
    2,615.08/3,920.56 = 1,790.84/x
  3. Step 3: Cross multiply
    2,615.08x = 3,920.56 × 1,790.84
  4. Step 4: Simplify right side
    2,615.08x = 7,021,095.67
  5. Step 5: Solve for x
    x = 7,021,095.67/2,615.08
  6. Step 6: Final answer
    x = 2,684.85

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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.