Home / 1,970.96-2,719.44-1,224.92

Finding the Fourth Proportional to 1,970.96, 2,719.44 and 1,224.92

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Solution

The fourth proportional to 1,970.96, 2,719.44 and 1,224.92 is: 1,690.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.96 : 2,719.44 = 1,224.92 : x
  2. Step 2: Convert to fraction form
    1,970.96/2,719.44 = 1,224.92/x
  3. Step 3: Cross multiply
    1,970.96x = 2,719.44 × 1,224.92
  4. Step 4: Simplify right side
    1,970.96x = 3,331,096.44
  5. Step 5: Solve for x
    x = 3,331,096.44/1,970.96
  6. Step 6: Final answer
    x = 1,690.09

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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.