Home / 2,129.02-3,193.67-668.23

Finding the Fourth Proportional to 2,129.02, 3,193.67 and 668.23

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Solution

The fourth proportional to 2,129.02, 3,193.67 and 668.23 is: 1,002.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.02 : 3,193.67 = 668.23 : x
  2. Step 2: Convert to fraction form
    2,129.02/3,193.67 = 668.23/x
  3. Step 3: Cross multiply
    2,129.02x = 3,193.67 × 668.23
  4. Step 4: Simplify right side
    2,129.02x = 2,134,102.76
  5. Step 5: Solve for x
    x = 2,134,102.76/2,129.02
  6. Step 6: Final answer
    x = 1,002.39

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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.