Home / 3,480.39-4,802.31-1,988.01

Finding the Fourth Proportional to 3,480.39, 4,802.31 and 1,988.01

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Solution

The fourth proportional to 3,480.39, 4,802.31 and 1,988.01 is: 2,743.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.39 : 4,802.31 = 1,988.01 : x
  2. Step 2: Convert to fraction form
    3,480.39/4,802.31 = 1,988.01/x
  3. Step 3: Cross multiply
    3,480.39x = 4,802.31 × 1,988.01
  4. Step 4: Simplify right side
    3,480.39x = 9,547,040.30
  5. Step 5: Solve for x
    x = 9,547,040.30/3,480.39
  6. Step 6: Final answer
    x = 2,743.09

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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.