Home / 1,678.45-2,506.37-1,370.91

Finding the Fourth Proportional to 1,678.45, 2,506.37 and 1,370.91

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Solution

The fourth proportional to 1,678.45, 2,506.37 and 1,370.91 is: 2,047.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.45 : 2,506.37 = 1,370.91 : x
  2. Step 2: Convert to fraction form
    1,678.45/2,506.37 = 1,370.91/x
  3. Step 3: Cross multiply
    1,678.45x = 2,506.37 × 1,370.91
  4. Step 4: Simplify right side
    1,678.45x = 3,435,991.74
  5. Step 5: Solve for x
    x = 3,435,991.74/1,678.45
  6. Step 6: Final answer
    x = 2,047.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.