Home / 2,790.15-3,850.47-1,531.26

Finding the Fourth Proportional to 2,790.15, 3,850.47 and 1,531.26

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Solution

The fourth proportional to 2,790.15, 3,850.47 and 1,531.26 is: 2,113.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.15 : 3,850.47 = 1,531.26 : x
  2. Step 2: Convert to fraction form
    2,790.15/3,850.47 = 1,531.26/x
  3. Step 3: Cross multiply
    2,790.15x = 3,850.47 × 1,531.26
  4. Step 4: Simplify right side
    2,790.15x = 5,896,070.17
  5. Step 5: Solve for x
    x = 5,896,070.17/2,790.15
  6. Step 6: Final answer
    x = 2,113.17

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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.