Home / 2,918.71-4,379.36-1,531.72

Finding the Fourth Proportional to 2,918.71, 4,379.36 and 1,531.72

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Solution

The fourth proportional to 2,918.71, 4,379.36 and 1,531.72 is: 2,298.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.71 : 4,379.36 = 1,531.72 : x
  2. Step 2: Convert to fraction form
    2,918.71/4,379.36 = 1,531.72/x
  3. Step 3: Cross multiply
    2,918.71x = 4,379.36 × 1,531.72
  4. Step 4: Simplify right side
    2,918.71x = 6,707,953.30
  5. Step 5: Solve for x
    x = 6,707,953.30/2,918.71
  6. Step 6: Final answer
    x = 2,298.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.