Home / 4,270.41-6,405.60-1,987.99

Finding the Fourth Proportional to 4,270.41, 6,405.60 and 1,987.99

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Solution

The fourth proportional to 4,270.41, 6,405.60 and 1,987.99 is: 2,981.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,270.41 : 6,405.60 = 1,987.99 : x
  2. Step 2: Convert to fraction form
    4,270.41/6,405.60 = 1,987.99/x
  3. Step 3: Cross multiply
    4,270.41x = 6,405.60 × 1,987.99
  4. Step 4: Simplify right side
    4,270.41x = 12,734,268.74
  5. Step 5: Solve for x
    x = 12,734,268.74/4,270.41
  6. Step 6: Final answer
    x = 2,981.98

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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.