Home / 2,762.31-3,811.65-1,643.30

Finding the Fourth Proportional to 2,762.31, 3,811.65 and 1,643.30

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Solution

The fourth proportional to 2,762.31, 3,811.65 and 1,643.30 is: 2,267.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,762.31 : 3,811.65 = 1,643.30 : x
  2. Step 2: Convert to fraction form
    2,762.31/3,811.65 = 1,643.30/x
  3. Step 3: Cross multiply
    2,762.31x = 3,811.65 × 1,643.30
  4. Step 4: Simplify right side
    2,762.31x = 6,263,665.39
  5. Step 5: Solve for x
    x = 6,263,665.39/2,762.31
  6. Step 6: Final answer
    x = 2,267.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.