Home / 1,219.23-1,829.16-439.43

Finding the Fourth Proportional to 1,219.23, 1,829.16 and 439.43

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Solution

The fourth proportional to 1,219.23, 1,829.16 and 439.43 is: 659.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219.23 : 1,829.16 = 439.43 : x
  2. Step 2: Convert to fraction form
    1,219.23/1,829.16 = 439.43/x
  3. Step 3: Cross multiply
    1,219.23x = 1,829.16 × 439.43
  4. Step 4: Simplify right side
    1,219.23x = 803,778.63
  5. Step 5: Solve for x
    x = 803,778.63/1,219.23
  6. Step 6: Final answer
    x = 659.25

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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.