Home / 2,491.70-3,438.45-1,607.99

Finding the Fourth Proportional to 2,491.70, 3,438.45 and 1,607.99

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Solution

The fourth proportional to 2,491.70, 3,438.45 and 1,607.99 is: 2,218.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.70 : 3,438.45 = 1,607.99 : x
  2. Step 2: Convert to fraction form
    2,491.70/3,438.45 = 1,607.99/x
  3. Step 3: Cross multiply
    2,491.70x = 3,438.45 × 1,607.99
  4. Step 4: Simplify right side
    2,491.70x = 5,528,976.02
  5. Step 5: Solve for x
    x = 5,528,976.02/2,491.70
  6. Step 6: Final answer
    x = 2,218.96

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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.