Home / 2,129.79-2,939.00-1,233.38

Finding the Fourth Proportional to 2,129.79, 2,939.00 and 1,233.38

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Solution

The fourth proportional to 2,129.79, 2,939.00 and 1,233.38 is: 1,701.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.79 : 2,939.00 = 1,233.38 : x
  2. Step 2: Convert to fraction form
    2,129.79/2,939.00 = 1,233.38/x
  3. Step 3: Cross multiply
    2,129.79x = 2,939.00 × 1,233.38
  4. Step 4: Simplify right side
    2,129.79x = 3,624,895.41
  5. Step 5: Solve for x
    x = 3,624,895.41/2,129.79
  6. Step 6: Final answer
    x = 1,701.99

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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.