Home / 1,970.08-2,719.97-1,225.12

Finding the Fourth Proportional to 1,970.08, 2,719.97 and 1,225.12

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Solution

The fourth proportional to 1,970.08, 2,719.97 and 1,225.12 is: 1,691.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.08 : 2,719.97 = 1,225.12 : x
  2. Step 2: Convert to fraction form
    1,970.08/2,719.97 = 1,225.12/x
  3. Step 3: Cross multiply
    1,970.08x = 2,719.97 × 1,225.12
  4. Step 4: Simplify right side
    1,970.08x = 3,332,289.65
  5. Step 5: Solve for x
    x = 3,332,289.65/1,970.08
  6. Step 6: Final answer
    x = 1,691.45

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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.