Home / 2,129.63-3,193.37-974.75

Finding the Fourth Proportional to 2,129.63, 3,193.37 and 974.75

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Solution

The fourth proportional to 2,129.63, 3,193.37 and 974.75 is: 1,461.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.63 : 3,193.37 = 974.75 : x
  2. Step 2: Convert to fraction form
    2,129.63/3,193.37 = 974.75/x
  3. Step 3: Cross multiply
    2,129.63x = 3,193.37 × 974.75
  4. Step 4: Simplify right side
    2,129.63x = 3,112,732.53
  5. Step 5: Solve for x
    x = 3,112,732.53/2,129.63
  6. Step 6: Final answer
    x = 1,461.63

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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.