Home / 3,653.96-5,040.54-2,160.80

Finding the Fourth Proportional to 3,653.96, 5,040.54 and 2,160.80

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Solution

The fourth proportional to 3,653.96, 5,040.54 and 2,160.80 is: 2,980.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653.96 : 5,040.54 = 2,160.80 : x
  2. Step 2: Convert to fraction form
    3,653.96/5,040.54 = 2,160.80/x
  3. Step 3: Cross multiply
    3,653.96x = 5,040.54 × 2,160.80
  4. Step 4: Simplify right side
    3,653.96x = 10,891,598.83
  5. Step 5: Solve for x
    x = 10,891,598.83/3,653.96
  6. Step 6: Final answer
    x = 2,980.77

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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.