Home / 2,089.14-3,148.32-1,990.32

Finding the Fourth Proportional to 2,089.14, 3,148.32 and 1,990.32

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Solution

The fourth proportional to 2,089.14, 3,148.32 and 1,990.32 is: 2,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,089.14 : 3,148.32 = 1,990.32 : x
  2. Step 2: Convert to fraction form
    2,089.14/3,148.32 = 1,990.32/x
  3. Step 3: Cross multiply
    2,089.14x = 3,148.32 × 1,990.32
  4. Step 4: Simplify right side
    2,089.14x = 6,266,164.26
  5. Step 5: Solve for x
    x = 6,266,164.26/2,089.14
  6. Step 6: Final answer
    x = 2,999.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.