Home / 2,912.40-4,018.96-1,586.08

Finding the Fourth Proportional to 2,912.40, 4,018.96 and 1,586.08

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Solution

The fourth proportional to 2,912.40, 4,018.96 and 1,586.08 is: 2,188.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.40 : 4,018.96 = 1,586.08 : x
  2. Step 2: Convert to fraction form
    2,912.40/4,018.96 = 1,586.08/x
  3. Step 3: Cross multiply
    2,912.40x = 4,018.96 × 1,586.08
  4. Step 4: Simplify right side
    2,912.40x = 6,374,392.08
  5. Step 5: Solve for x
    x = 6,374,392.08/2,912.40
  6. Step 6: Final answer
    x = 2,188.71

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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.