Home / 2,170.70-3,251.95-1,681.36

Finding the Fourth Proportional to 2,170.70, 3,251.95 and 1,681.36

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Solution

The fourth proportional to 2,170.70, 3,251.95 and 1,681.36 is: 2,518.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.70 : 3,251.95 = 1,681.36 : x
  2. Step 2: Convert to fraction form
    2,170.70/3,251.95 = 1,681.36/x
  3. Step 3: Cross multiply
    2,170.70x = 3,251.95 × 1,681.36
  4. Step 4: Simplify right side
    2,170.70x = 5,467,686.32
  5. Step 5: Solve for x
    x = 5,467,686.32/2,170.70
  6. Step 6: Final answer
    x = 2,518.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.