Home / 1,970.35-2,719.46-1,224.61

Finding the Fourth Proportional to 1,970.35, 2,719.46 and 1,224.61

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Solution

The fourth proportional to 1,970.35, 2,719.46 and 1,224.61 is: 1,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.35 : 2,719.46 = 1,224.61 : x
  2. Step 2: Convert to fraction form
    1,970.35/2,719.46 = 1,224.61/x
  3. Step 3: Cross multiply
    1,970.35x = 2,719.46 × 1,224.61
  4. Step 4: Simplify right side
    1,970.35x = 3,330,277.91
  5. Step 5: Solve for x
    x = 3,330,277.91/1,970.35
  6. Step 6: Final answer
    x = 1,690.20

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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.