Home / 2,145.02-3,212.36-1,218.31

Finding the Fourth Proportional to 2,145.02, 3,212.36 and 1,218.31

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Solution

The fourth proportional to 2,145.02, 3,212.36 and 1,218.31 is: 1,824.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.02 : 3,212.36 = 1,218.31 : x
  2. Step 2: Convert to fraction form
    2,145.02/3,212.36 = 1,218.31/x
  3. Step 3: Cross multiply
    2,145.02x = 3,212.36 × 1,218.31
  4. Step 4: Simplify right side
    2,145.02x = 3,913,640.76
  5. Step 5: Solve for x
    x = 3,913,640.76/2,145.02
  6. Step 6: Final answer
    x = 1,824.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.