Home / 3,102.06-4,280.73-1,685.70

Finding the Fourth Proportional to 3,102.06, 4,280.73 and 1,685.70

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Solution

The fourth proportional to 3,102.06, 4,280.73 and 1,685.70 is: 2,326.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.06 : 4,280.73 = 1,685.70 : x
  2. Step 2: Convert to fraction form
    3,102.06/4,280.73 = 1,685.70/x
  3. Step 3: Cross multiply
    3,102.06x = 4,280.73 × 1,685.70
  4. Step 4: Simplify right side
    3,102.06x = 7,216,026.56
  5. Step 5: Solve for x
    x = 7,216,026.56/3,102.06
  6. Step 6: Final answer
    x = 2,326.20

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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.