Home / 2,136.31-2,945.30-1,507.55

Finding the Fourth Proportional to 2,136.31, 2,945.30 and 1,507.55

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Solution

The fourth proportional to 2,136.31, 2,945.30 and 1,507.55 is: 2,078.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.31 : 2,945.30 = 1,507.55 : x
  2. Step 2: Convert to fraction form
    2,136.31/2,945.30 = 1,507.55/x
  3. Step 3: Cross multiply
    2,136.31x = 2,945.30 × 1,507.55
  4. Step 4: Simplify right side
    2,136.31x = 4,440,164.75
  5. Step 5: Solve for x
    x = 4,440,164.75/2,136.31
  6. Step 6: Final answer
    x = 2,078.43

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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.