Home / 1,874.79-2,586.29-1,212.21

Finding the Fourth Proportional to 1,874.79, 2,586.29 and 1,212.21

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Solution

The fourth proportional to 1,874.79, 2,586.29 and 1,212.21 is: 1,672.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.79 : 2,586.29 = 1,212.21 : x
  2. Step 2: Convert to fraction form
    1,874.79/2,586.29 = 1,212.21/x
  3. Step 3: Cross multiply
    1,874.79x = 2,586.29 × 1,212.21
  4. Step 4: Simplify right side
    1,874.79x = 3,135,126.60
  5. Step 5: Solve for x
    x = 3,135,126.60/1,874.79
  6. Step 6: Final answer
    x = 1,672.25

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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.