Home / 3,478.36-4,799.08-2,151.60

Finding the Fourth Proportional to 3,478.36, 4,799.08 and 2,151.60

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Solution

The fourth proportional to 3,478.36, 4,799.08 and 2,151.60 is: 2,968.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.36 : 4,799.08 = 2,151.60 : x
  2. Step 2: Convert to fraction form
    3,478.36/4,799.08 = 2,151.60/x
  3. Step 3: Cross multiply
    3,478.36x = 4,799.08 × 2,151.60
  4. Step 4: Simplify right side
    3,478.36x = 10,325,700.53
  5. Step 5: Solve for x
    x = 10,325,700.53/3,478.36
  6. Step 6: Final answer
    x = 2,968.55

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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.