Home / 2,125.79-2,932.90-1,286.18

Finding the Fourth Proportional to 2,125.79, 2,932.90 and 1,286.18

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Solution

The fourth proportional to 2,125.79, 2,932.90 and 1,286.18 is: 1,774.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.79 : 2,932.90 = 1,286.18 : x
  2. Step 2: Convert to fraction form
    2,125.79/2,932.90 = 1,286.18/x
  3. Step 3: Cross multiply
    2,125.79x = 2,932.90 × 1,286.18
  4. Step 4: Simplify right side
    2,125.79x = 3,772,228.63
  5. Step 5: Solve for x
    x = 3,772,228.63/2,125.79
  6. Step 6: Final answer
    x = 1,774.50

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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.