Home / 2,911.51-4,363.37-1,428.46

Finding the Fourth Proportional to 2,911.51, 4,363.37 and 1,428.46

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Solution

The fourth proportional to 2,911.51, 4,363.37 and 1,428.46 is: 2,140.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.51 : 4,363.37 = 1,428.46 : x
  2. Step 2: Convert to fraction form
    2,911.51/4,363.37 = 1,428.46/x
  3. Step 3: Cross multiply
    2,911.51x = 4,363.37 × 1,428.46
  4. Step 4: Simplify right side
    2,911.51x = 6,232,899.51
  5. Step 5: Solve for x
    x = 6,232,899.51/2,911.51
  6. Step 6: Final answer
    x = 2,140.78

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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.