Home / 2,567.70-3,543.43-1,388.77

Finding the Fourth Proportional to 2,567.70, 3,543.43 and 1,388.77

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Solution

The fourth proportional to 2,567.70, 3,543.43 and 1,388.77 is: 1,916.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,567.70 : 3,543.43 = 1,388.77 : x
  2. Step 2: Convert to fraction form
    2,567.70/3,543.43 = 1,388.77/x
  3. Step 3: Cross multiply
    2,567.70x = 3,543.43 × 1,388.77
  4. Step 4: Simplify right side
    2,567.70x = 4,921,020.00
  5. Step 5: Solve for x
    x = 4,921,020.00/2,567.70
  6. Step 6: Final answer
    x = 1,916.51

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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.