Home / 3,681.65-5,080.70-2,190.31

Finding the Fourth Proportional to 3,681.65, 5,080.70 and 2,190.31

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Solution

The fourth proportional to 3,681.65, 5,080.70 and 2,190.31 is: 3,022.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.65 : 5,080.70 = 2,190.31 : x
  2. Step 2: Convert to fraction form
    3,681.65/5,080.70 = 2,190.31/x
  3. Step 3: Cross multiply
    3,681.65x = 5,080.70 × 2,190.31
  4. Step 4: Simplify right side
    3,681.65x = 11,128,300.79
  5. Step 5: Solve for x
    x = 11,128,300.79/3,681.65
  6. Step 6: Final answer
    x = 3,022.64

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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.