Home / 2,491.04-3,437.65-1,428.85

Finding the Fourth Proportional to 2,491.04, 3,437.65 and 1,428.85

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Solution

The fourth proportional to 2,491.04, 3,437.65 and 1,428.85 is: 1,971.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.04 : 3,437.65 = 1,428.85 : x
  2. Step 2: Convert to fraction form
    2,491.04/3,437.65 = 1,428.85/x
  3. Step 3: Cross multiply
    2,491.04x = 3,437.65 × 1,428.85
  4. Step 4: Simplify right side
    2,491.04x = 4,911,878.60
  5. Step 5: Solve for x
    x = 4,911,878.60/2,491.04
  6. Step 6: Final answer
    x = 1,971.82

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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.