Home / 2,911.61-4,018-1,585.31

Finding the Fourth Proportional to 2,911.61, 4,018 and 1,585.31

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Solution

The fourth proportional to 2,911.61, 4,018 and 1,585.31 is: 2,187.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.61 : 4,018 = 1,585.31 : x
  2. Step 2: Convert to fraction form
    2,911.61/4,018 = 1,585.31/x
  3. Step 3: Cross multiply
    2,911.61x = 4,018 × 1,585.31
  4. Step 4: Simplify right side
    2,911.61x = 6,369,775.58
  5. Step 5: Solve for x
    x = 6,369,775.58/2,911.61
  6. Step 6: Final answer
    x = 2,187.72

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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.