Home / 1,790.23-2,471.28-1,678.14

Finding the Fourth Proportional to 1,790.23, 2,471.28 and 1,678.14

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Solution

The fourth proportional to 1,790.23, 2,471.28 and 1,678.14 is: 2,316.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,790.23 : 2,471.28 = 1,678.14 : x
  2. Step 2: Convert to fraction form
    1,790.23/2,471.28 = 1,678.14/x
  3. Step 3: Cross multiply
    1,790.23x = 2,471.28 × 1,678.14
  4. Step 4: Simplify right side
    1,790.23x = 4,147,153.82
  5. Step 5: Solve for x
    x = 4,147,153.82/1,790.23
  6. Step 6: Final answer
    x = 2,316.55

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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.