Home / 2,904.21-4,357.26-1,978.38

Finding the Fourth Proportional to 2,904.21, 4,357.26 and 1,978.38

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Solution

The fourth proportional to 2,904.21, 4,357.26 and 1,978.38 is: 2,968.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,904.21 : 4,357.26 = 1,978.38 : x
  2. Step 2: Convert to fraction form
    2,904.21/4,357.26 = 1,978.38/x
  3. Step 3: Cross multiply
    2,904.21x = 4,357.26 × 1,978.38
  4. Step 4: Simplify right side
    2,904.21x = 8,620,316.04
  5. Step 5: Solve for x
    x = 8,620,316.04/2,904.21
  6. Step 6: Final answer
    x = 2,968.21

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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.