Home / 3,681.48-5,080.54-2,190.20

Finding the Fourth Proportional to 3,681.48, 5,080.54 and 2,190.20

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Solution

The fourth proportional to 3,681.48, 5,080.54 and 2,190.20 is: 3,022.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.48 : 5,080.54 = 2,190.20 : x
  2. Step 2: Convert to fraction form
    3,681.48/5,080.54 = 2,190.20/x
  3. Step 3: Cross multiply
    3,681.48x = 5,080.54 × 2,190.20
  4. Step 4: Simplify right side
    3,681.48x = 11,127,398.71
  5. Step 5: Solve for x
    x = 11,127,398.71/3,681.48
  6. Step 6: Final answer
    x = 3,022.53

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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.