Home / 2,762.49-4,143.74-1,120.20

Finding the Fourth Proportional to 2,762.49, 4,143.74 and 1,120.20

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Solution

The fourth proportional to 2,762.49, 4,143.74 and 1,120.20 is: 1,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,762.49 : 4,143.74 = 1,120.20 : x
  2. Step 2: Convert to fraction form
    2,762.49/4,143.74 = 1,120.20/x
  3. Step 3: Cross multiply
    2,762.49x = 4,143.74 × 1,120.20
  4. Step 4: Simplify right side
    2,762.49x = 4,641,817.55
  5. Step 5: Solve for x
    x = 4,641,817.55/2,762.49
  6. Step 6: Final answer
    x = 1,680.30

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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.