Home / 2,143.22-2,956.99-1,396.91

Finding the Fourth Proportional to 2,143.22, 2,956.99 and 1,396.91

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Solution

The fourth proportional to 2,143.22, 2,956.99 and 1,396.91 is: 1,927.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.22 : 2,956.99 = 1,396.91 : x
  2. Step 2: Convert to fraction form
    2,143.22/2,956.99 = 1,396.91/x
  3. Step 3: Cross multiply
    2,143.22x = 2,956.99 × 1,396.91
  4. Step 4: Simplify right side
    2,143.22x = 4,130,627.13
  5. Step 5: Solve for x
    x = 4,130,627.13/2,143.22
  6. Step 6: Final answer
    x = 1,927.30

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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.