Home / 3,612.33-5,416.47-1,421.55

Finding the Fourth Proportional to 3,612.33, 5,416.47 and 1,421.55

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Solution

The fourth proportional to 3,612.33, 5,416.47 and 1,421.55 is: 2,131.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.33 : 5,416.47 = 1,421.55 : x
  2. Step 2: Convert to fraction form
    3,612.33/5,416.47 = 1,421.55/x
  3. Step 3: Cross multiply
    3,612.33x = 5,416.47 × 1,421.55
  4. Step 4: Simplify right side
    3,612.33x = 7,699,782.93
  5. Step 5: Solve for x
    x = 7,699,782.93/3,612.33
  6. Step 6: Final answer
    x = 2,131.53

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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.