Home / 2,830.33-4,243.95-981.30

Finding the Fourth Proportional to 2,830.33, 4,243.95 and 981.30

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Solution

The fourth proportional to 2,830.33, 4,243.95 and 981.30 is: 1,471.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.33 : 4,243.95 = 981.30 : x
  2. Step 2: Convert to fraction form
    2,830.33/4,243.95 = 981.30/x
  3. Step 3: Cross multiply
    2,830.33x = 4,243.95 × 981.30
  4. Step 4: Simplify right side
    2,830.33x = 4,164,588.14
  5. Step 5: Solve for x
    x = 4,164,588.14/2,830.33
  6. Step 6: Final answer
    x = 1,471.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.