Home / 2,938.67-4,057.26-2,151.35

Finding the Fourth Proportional to 2,938.67, 4,057.26 and 2,151.35

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Solution

The fourth proportional to 2,938.67, 4,057.26 and 2,151.35 is: 2,970.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.67 : 4,057.26 = 2,151.35 : x
  2. Step 2: Convert to fraction form
    2,938.67/4,057.26 = 2,151.35/x
  3. Step 3: Cross multiply
    2,938.67x = 4,057.26 × 2,151.35
  4. Step 4: Simplify right side
    2,938.67x = 8,728,586.30
  5. Step 5: Solve for x
    x = 8,728,586.30/2,938.67
  6. Step 6: Final answer
    x = 2,970.25

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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.