Home / 2,491.05-3,437.73-1,428.47

Finding the Fourth Proportional to 2,491.05, 3,437.73 and 1,428.47

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Solution

The fourth proportional to 2,491.05, 3,437.73 and 1,428.47 is: 1,971.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.05 : 3,437.73 = 1,428.47 : x
  2. Step 2: Convert to fraction form
    2,491.05/3,437.73 = 1,428.47/x
  3. Step 3: Cross multiply
    2,491.05x = 3,437.73 × 1,428.47
  4. Step 4: Simplify right side
    2,491.05x = 4,910,676.98
  5. Step 5: Solve for x
    x = 4,910,676.98/2,491.05
  6. Step 6: Final answer
    x = 1,971.33

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1.5x scale

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.