Home / 2,102.61-3,155.98-1,282.49

Finding the Fourth Proportional to 2,102.61, 3,155.98 and 1,282.49

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Solution

The fourth proportional to 2,102.61, 3,155.98 and 1,282.49 is: 1,924.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.61 : 3,155.98 = 1,282.49 : x
  2. Step 2: Convert to fraction form
    2,102.61/3,155.98 = 1,282.49/x
  3. Step 3: Cross multiply
    2,102.61x = 3,155.98 × 1,282.49
  4. Step 4: Simplify right side
    2,102.61x = 4,047,512.79
  5. Step 5: Solve for x
    x = 4,047,512.79/2,102.61
  6. Step 6: Final answer
    x = 1,924.99

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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.