Home / 2,400.12-3,312.23-1,405.31

Finding the Fourth Proportional to 2,400.12, 3,312.23 and 1,405.31

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Solution

The fourth proportional to 2,400.12, 3,312.23 and 1,405.31 is: 1,939.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,400.12 : 3,312.23 = 1,405.31 : x
  2. Step 2: Convert to fraction form
    2,400.12/3,312.23 = 1,405.31/x
  3. Step 3: Cross multiply
    2,400.12x = 3,312.23 × 1,405.31
  4. Step 4: Simplify right side
    2,400.12x = 4,654,693.38
  5. Step 5: Solve for x
    x = 4,654,693.38/2,400.12
  6. Step 6: Final answer
    x = 1,939.36

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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.