Home / 2,685.55-4,029.71-1,951.21

Finding the Fourth Proportional to 2,685.55, 4,029.71 and 1,951.21

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Solution

The fourth proportional to 2,685.55, 4,029.71 and 1,951.21 is: 2,927.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.55 : 4,029.71 = 1,951.21 : x
  2. Step 2: Convert to fraction form
    2,685.55/4,029.71 = 1,951.21/x
  3. Step 3: Cross multiply
    2,685.55x = 4,029.71 × 1,951.21
  4. Step 4: Simplify right side
    2,685.55x = 7,862,810.45
  5. Step 5: Solve for x
    x = 7,862,810.45/2,685.55
  6. Step 6: Final answer
    x = 2,927.82

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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.