Home / 1,317.44-1,975.93-439.81

Finding the Fourth Proportional to 1,317.44, 1,975.93 and 439.81

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Solution

The fourth proportional to 1,317.44, 1,975.93 and 439.81 is: 659.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.44 : 1,975.93 = 439.81 : x
  2. Step 2: Convert to fraction form
    1,317.44/1,975.93 = 439.81/x
  3. Step 3: Cross multiply
    1,317.44x = 1,975.93 × 439.81
  4. Step 4: Simplify right side
    1,317.44x = 869,027.73
  5. Step 5: Solve for x
    x = 869,027.73/1,317.44
  6. Step 6: Final answer
    x = 659.63

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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.