Home / 1,970.38-2,718.64-1,298.11

Finding the Fourth Proportional to 1,970.38, 2,718.64 and 1,298.11

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Solution

The fourth proportional to 1,970.38, 2,718.64 and 1,298.11 is: 1,791.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.38 : 2,718.64 = 1,298.11 : x
  2. Step 2: Convert to fraction form
    1,970.38/2,718.64 = 1,298.11/x
  3. Step 3: Cross multiply
    1,970.38x = 2,718.64 × 1,298.11
  4. Step 4: Simplify right side
    1,970.38x = 3,529,083.73
  5. Step 5: Solve for x
    x = 3,529,083.73/1,970.38
  6. Step 6: Final answer
    x = 1,791.07

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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.