Home / 2,400.23-3,311.79-1,405.45

Finding the Fourth Proportional to 2,400.23, 3,311.79 and 1,405.45

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Solution

The fourth proportional to 2,400.23, 3,311.79 and 1,405.45 is: 1,939.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,400.23 : 3,311.79 = 1,405.45 : x
  2. Step 2: Convert to fraction form
    2,400.23/3,311.79 = 1,405.45/x
  3. Step 3: Cross multiply
    2,400.23x = 3,311.79 × 1,405.45
  4. Step 4: Simplify right side
    2,400.23x = 4,654,554.12
  5. Step 5: Solve for x
    x = 4,654,554.12/2,400.23
  6. Step 6: Final answer
    x = 1,939.21

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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.