Home / 2,975.12-4,105.62-1,927.16

Finding the Fourth Proportional to 2,975.12, 4,105.62 and 1,927.16

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Solution

The fourth proportional to 2,975.12, 4,105.62 and 1,927.16 is: 2,659.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,975.12 : 4,105.62 = 1,927.16 : x
  2. Step 2: Convert to fraction form
    2,975.12/4,105.62 = 1,927.16/x
  3. Step 3: Cross multiply
    2,975.12x = 4,105.62 × 1,927.16
  4. Step 4: Simplify right side
    2,975.12x = 7,912,186.64
  5. Step 5: Solve for x
    x = 7,912,186.64/2,975.12
  6. Step 6: Final answer
    x = 2,659.45

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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.