Home / 1,890.06-2,608.92-1,292.91

Finding the Fourth Proportional to 1,890.06, 2,608.92 and 1,292.91

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Solution

The fourth proportional to 1,890.06, 2,608.92 and 1,292.91 is: 1,784.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.06 : 2,608.92 = 1,292.91 : x
  2. Step 2: Convert to fraction form
    1,890.06/2,608.92 = 1,292.91/x
  3. Step 3: Cross multiply
    1,890.06x = 2,608.92 × 1,292.91
  4. Step 4: Simplify right side
    1,890.06x = 3,373,098.76
  5. Step 5: Solve for x
    x = 3,373,098.76/1,890.06
  6. Step 6: Final answer
    x = 1,784.65

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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.