Home / 2,181.55-3,008.80-1,542.35

Finding the Fourth Proportional to 2,181.55, 3,008.80 and 1,542.35

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Solution

The fourth proportional to 2,181.55, 3,008.80 and 1,542.35 is: 2,127.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.55 : 3,008.80 = 1,542.35 : x
  2. Step 2: Convert to fraction form
    2,181.55/3,008.80 = 1,542.35/x
  3. Step 3: Cross multiply
    2,181.55x = 3,008.80 × 1,542.35
  4. Step 4: Simplify right side
    2,181.55x = 4,640,622.68
  5. Step 5: Solve for x
    x = 4,640,622.68/2,181.55
  6. Step 6: Final answer
    x = 2,127.22

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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.