Home / 2,142.44-2,956.98-1,356.68

Finding the Fourth Proportional to 2,142.44, 2,956.98 and 1,356.68

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Solution

The fourth proportional to 2,142.44, 2,956.98 and 1,356.68 is: 1,872.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.44 : 2,956.98 = 1,356.68 : x
  2. Step 2: Convert to fraction form
    2,142.44/2,956.98 = 1,356.68/x
  3. Step 3: Cross multiply
    2,142.44x = 2,956.98 × 1,356.68
  4. Step 4: Simplify right side
    2,142.44x = 4,011,675.63
  5. Step 5: Solve for x
    x = 4,011,675.63/2,142.44
  6. Step 6: Final answer
    x = 1,872.48

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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.