Home / 2,987.06-4,478.94-2,291.99

Finding the Fourth Proportional to 2,987.06, 4,478.94 and 2,291.99

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Solution

The fourth proportional to 2,987.06, 4,478.94 and 2,291.99 is: 3,436.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.06 : 4,478.94 = 2,291.99 : x
  2. Step 2: Convert to fraction form
    2,987.06/4,478.94 = 2,291.99/x
  3. Step 3: Cross multiply
    2,987.06x = 4,478.94 × 2,291.99
  4. Step 4: Simplify right side
    2,987.06x = 10,265,663.30
  5. Step 5: Solve for x
    x = 10,265,663.30/2,987.06
  6. Step 6: Final answer
    x = 3,436.72

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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.