Home / 2,990.23-4,486.07-1,258.99

Finding the Fourth Proportional to 2,990.23, 4,486.07 and 1,258.99

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Solution

The fourth proportional to 2,990.23, 4,486.07 and 1,258.99 is: 1,888.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.23 : 4,486.07 = 1,258.99 : x
  2. Step 2: Convert to fraction form
    2,990.23/4,486.07 = 1,258.99/x
  3. Step 3: Cross multiply
    2,990.23x = 4,486.07 × 1,258.99
  4. Step 4: Simplify right side
    2,990.23x = 5,647,909.20
  5. Step 5: Solve for x
    x = 5,647,909.20/2,990.23
  6. Step 6: Final answer
    x = 1,888.79

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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.