Home / 2,943.20-4,405.20-2,290.40

Finding the Fourth Proportional to 2,943.20, 4,405.20 and 2,290.40

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Solution

The fourth proportional to 2,943.20, 4,405.20 and 2,290.40 is: 3,428.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,943.20 : 4,405.20 = 2,290.40 : x
  2. Step 2: Convert to fraction form
    2,943.20/4,405.20 = 2,290.40/x
  3. Step 3: Cross multiply
    2,943.20x = 4,405.20 × 2,290.40
  4. Step 4: Simplify right side
    2,943.20x = 10,089,670.08
  5. Step 5: Solve for x
    x = 10,089,670.08/2,943.20
  6. Step 6: Final answer
    x = 3,428.13

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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.