Home / 2,681.20-3,702.01-1,936.81

Finding the Fourth Proportional to 2,681.20, 3,702.01 and 1,936.81

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Solution

The fourth proportional to 2,681.20, 3,702.01 and 1,936.81 is: 2,674.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.20 : 3,702.01 = 1,936.81 : x
  2. Step 2: Convert to fraction form
    2,681.20/3,702.01 = 1,936.81/x
  3. Step 3: Cross multiply
    2,681.20x = 3,702.01 × 1,936.81
  4. Step 4: Simplify right side
    2,681.20x = 7,170,089.99
  5. Step 5: Solve for x
    x = 7,170,089.99/2,681.20
  6. Step 6: Final answer
    x = 2,674.21

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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.