Home / 2,213.65-3,319.42-1,289.47

Finding the Fourth Proportional to 2,213.65, 3,319.42 and 1,289.47

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Solution

The fourth proportional to 2,213.65, 3,319.42 and 1,289.47 is: 1,933.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.65 : 3,319.42 = 1,289.47 : x
  2. Step 2: Convert to fraction form
    2,213.65/3,319.42 = 1,289.47/x
  3. Step 3: Cross multiply
    2,213.65x = 3,319.42 × 1,289.47
  4. Step 4: Simplify right side
    2,213.65x = 4,280,302.07
  5. Step 5: Solve for x
    x = 4,280,302.07/2,213.65
  6. Step 6: Final answer
    x = 1,933.59

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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.