Home / 2,188.34-3,020.19-1,256.84

Finding the Fourth Proportional to 2,188.34, 3,020.19 and 1,256.84

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Solution

The fourth proportional to 2,188.34, 3,020.19 and 1,256.84 is: 1,734.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.34 : 3,020.19 = 1,256.84 : x
  2. Step 2: Convert to fraction form
    2,188.34/3,020.19 = 1,256.84/x
  3. Step 3: Cross multiply
    2,188.34x = 3,020.19 × 1,256.84
  4. Step 4: Simplify right side
    2,188.34x = 3,795,895.60
  5. Step 5: Solve for x
    x = 3,795,895.60/2,188.34
  6. Step 6: Final answer
    x = 1,734.60

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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.