Home / 2,979.40-4,469.10-1,888.60

Finding the Fourth Proportional to 2,979.40, 4,469.10 and 1,888.60

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Solution

The fourth proportional to 2,979.40, 4,469.10 and 1,888.60 is: 2,832.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.40 : 4,469.10 = 1,888.60 : x
  2. Step 2: Convert to fraction form
    2,979.40/4,469.10 = 1,888.60/x
  3. Step 3: Cross multiply
    2,979.40x = 4,469.10 × 1,888.60
  4. Step 4: Simplify right side
    2,979.40x = 8,440,342.26
  5. Step 5: Solve for x
    x = 8,440,342.26/2,979.40
  6. Step 6: Final answer
    x = 2,832.90

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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.