Home / 2,798.66-3,860.79-2,173.34

Finding the Fourth Proportional to 2,798.66, 3,860.79 and 2,173.34

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Solution

The fourth proportional to 2,798.66, 3,860.79 and 2,173.34 is: 2,998.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,798.66 : 3,860.79 = 2,173.34 : x
  2. Step 2: Convert to fraction form
    2,798.66/3,860.79 = 2,173.34/x
  3. Step 3: Cross multiply
    2,798.66x = 3,860.79 × 2,173.34
  4. Step 4: Simplify right side
    2,798.66x = 8,390,809.34
  5. Step 5: Solve for x
    x = 8,390,809.34/2,798.66
  6. Step 6: Final answer
    x = 2,998.15

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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.