Home / 2,141.16-3,219.06-1,980.84

Finding the Fourth Proportional to 2,141.16, 3,219.06 and 1,980.84

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Solution

The fourth proportional to 2,141.16, 3,219.06 and 1,980.84 is: 2,978.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,141.16 : 3,219.06 = 1,980.84 : x
  2. Step 2: Convert to fraction form
    2,141.16/3,219.06 = 1,980.84/x
  3. Step 3: Cross multiply
    2,141.16x = 3,219.06 × 1,980.84
  4. Step 4: Simplify right side
    2,141.16x = 6,376,442.81
  5. Step 5: Solve for x
    x = 6,376,442.81/2,141.16
  6. Step 6: Final answer
    x = 2,978.03

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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.