Home / 2,009.40-3,014.10-1,318.20

Finding the Fourth Proportional to 2,009.40, 3,014.10 and 1,318.20

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Solution

The fourth proportional to 2,009.40, 3,014.10 and 1,318.20 is: 1,977.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,009.40 : 3,014.10 = 1,318.20 : x
  2. Step 2: Convert to fraction form
    2,009.40/3,014.10 = 1,318.20/x
  3. Step 3: Cross multiply
    2,009.40x = 3,014.10 × 1,318.20
  4. Step 4: Simplify right side
    2,009.40x = 3,973,186.62
  5. Step 5: Solve for x
    x = 3,973,186.62/2,009.40
  6. Step 6: Final answer
    x = 1,977.30

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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.