Home / 3,988.99-5,503.97-2,416.78

Finding the Fourth Proportional to 3,988.99, 5,503.97 and 2,416.78

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Solution

The fourth proportional to 3,988.99, 5,503.97 and 2,416.78 is: 3,334.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.99 : 5,503.97 = 2,416.78 : x
  2. Step 2: Convert to fraction form
    3,988.99/5,503.97 = 2,416.78/x
  3. Step 3: Cross multiply
    3,988.99x = 5,503.97 × 2,416.78
  4. Step 4: Simplify right side
    3,988.99x = 13,301,845.01
  5. Step 5: Solve for x
    x = 13,301,845.01/3,988.99
  6. Step 6: Final answer
    x = 3,334.64

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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.