Home / 4,190.21-5,781.83-2,421.47

Finding the Fourth Proportional to 4,190.21, 5,781.83 and 2,421.47

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Solution

The fourth proportional to 4,190.21, 5,781.83 and 2,421.47 is: 3,341.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,190.21 : 5,781.83 = 2,421.47 : x
  2. Step 2: Convert to fraction form
    4,190.21/5,781.83 = 2,421.47/x
  3. Step 3: Cross multiply
    4,190.21x = 5,781.83 × 2,421.47
  4. Step 4: Simplify right side
    4,190.21x = 14,000,515.78
  5. Step 5: Solve for x
    x = 14,000,515.78/4,190.21
  6. Step 6: Final answer
    x = 3,341.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.