Home / 2,106.15-3,156.66-1,490.03

Finding the Fourth Proportional to 2,106.15, 3,156.66 and 1,490.03

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Solution

The fourth proportional to 2,106.15, 3,156.66 and 1,490.03 is: 2,233.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.15 : 3,156.66 = 1,490.03 : x
  2. Step 2: Convert to fraction form
    2,106.15/3,156.66 = 1,490.03/x
  3. Step 3: Cross multiply
    2,106.15x = 3,156.66 × 1,490.03
  4. Step 4: Simplify right side
    2,106.15x = 4,703,502.32
  5. Step 5: Solve for x
    x = 4,703,502.32/2,106.15
  6. Step 6: Final answer
    x = 2,233.22

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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.