Home / 2,129.96-2,940.16-1,246.06

Finding the Fourth Proportional to 2,129.96, 2,940.16 and 1,246.06

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Solution

The fourth proportional to 2,129.96, 2,940.16 and 1,246.06 is: 1,720.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.96 : 2,940.16 = 1,246.06 : x
  2. Step 2: Convert to fraction form
    2,129.96/2,940.16 = 1,246.06/x
  3. Step 3: Cross multiply
    2,129.96x = 2,940.16 × 1,246.06
  4. Step 4: Simplify right side
    2,129.96x = 3,663,615.77
  5. Step 5: Solve for x
    x = 3,663,615.77/2,129.96
  6. Step 6: Final answer
    x = 1,720.04

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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.