Home / 2,491.07-3,437.57-1,428.08

Finding the Fourth Proportional to 2,491.07, 3,437.57 and 1,428.08

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Solution

The fourth proportional to 2,491.07, 3,437.57 and 1,428.08 is: 1,970.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.07 : 3,437.57 = 1,428.08 : x
  2. Step 2: Convert to fraction form
    2,491.07/3,437.57 = 1,428.08/x
  3. Step 3: Cross multiply
    2,491.07x = 3,437.57 × 1,428.08
  4. Step 4: Simplify right side
    2,491.07x = 4,909,104.21
  5. Step 5: Solve for x
    x = 4,909,104.21/2,491.07
  6. Step 6: Final answer
    x = 1,970.68

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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.