Home / 2,911.74-4,018.19-1,585.45

Finding the Fourth Proportional to 2,911.74, 4,018.19 and 1,585.45

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Solution

The fourth proportional to 2,911.74, 4,018.19 and 1,585.45 is: 2,187.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.74 : 4,018.19 = 1,585.45 : x
  2. Step 2: Convert to fraction form
    2,911.74/4,018.19 = 1,585.45/x
  3. Step 3: Cross multiply
    2,911.74x = 4,018.19 × 1,585.45
  4. Step 4: Simplify right side
    2,911.74x = 6,370,633.25
  5. Step 5: Solve for x
    x = 6,370,633.25/2,911.74
  6. Step 6: Final answer
    x = 2,187.91

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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.