Home / 2,762.39-4,145.75-1,120.09

Finding the Fourth Proportional to 2,762.39, 4,145.75 and 1,120.09

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Solution

The fourth proportional to 2,762.39, 4,145.75 and 1,120.09 is: 1,681.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,762.39 : 4,145.75 = 1,120.09 : x
  2. Step 2: Convert to fraction form
    2,762.39/4,145.75 = 1,120.09/x
  3. Step 3: Cross multiply
    2,762.39x = 4,145.75 × 1,120.09
  4. Step 4: Simplify right side
    2,762.39x = 4,643,597.47
  5. Step 5: Solve for x
    x = 4,643,597.47/2,762.39
  6. Step 6: Final answer
    x = 1,681.01

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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.