Home / 1,340.12-2,009.16-609.56

Finding the Fourth Proportional to 1,340.12, 2,009.16 and 609.56

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Solution

The fourth proportional to 1,340.12, 2,009.16 and 609.56 is: 913.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.12 : 2,009.16 = 609.56 : x
  2. Step 2: Convert to fraction form
    1,340.12/2,009.16 = 609.56/x
  3. Step 3: Cross multiply
    1,340.12x = 2,009.16 × 609.56
  4. Step 4: Simplify right side
    1,340.12x = 1,224,703.57
  5. Step 5: Solve for x
    x = 1,224,703.57/1,340.12
  6. Step 6: Final answer
    x = 913.88

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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.