Home / 2,121.55-2,927.55-1,237.43

Finding the Fourth Proportional to 2,121.55, 2,927.55 and 1,237.43

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Solution

The fourth proportional to 2,121.55, 2,927.55 and 1,237.43 is: 1,707.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.55 : 2,927.55 = 1,237.43 : x
  2. Step 2: Convert to fraction form
    2,121.55/2,927.55 = 1,237.43/x
  3. Step 3: Cross multiply
    2,121.55x = 2,927.55 × 1,237.43
  4. Step 4: Simplify right side
    2,121.55x = 3,622,638.20
  5. Step 5: Solve for x
    x = 3,622,638.20/2,121.55
  6. Step 6: Final answer
    x = 1,707.54

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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.