Home / 2,990.36-4,485.52-1,258.96

Finding the Fourth Proportional to 2,990.36, 4,485.52 and 1,258.96

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Solution

The fourth proportional to 2,990.36, 4,485.52 and 1,258.96 is: 1,888.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.36 : 4,485.52 = 1,258.96 : x
  2. Step 2: Convert to fraction form
    2,990.36/4,485.52 = 1,258.96/x
  3. Step 3: Cross multiply
    2,990.36x = 4,485.52 × 1,258.96
  4. Step 4: Simplify right side
    2,990.36x = 5,647,090.26
  5. Step 5: Solve for x
    x = 5,647,090.26/2,990.36
  6. Step 6: Final answer
    x = 1,888.43

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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.