Home / 2,830.80-4,246.74-981.48

Finding the Fourth Proportional to 2,830.80, 4,246.74 and 981.48

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Solution

The fourth proportional to 2,830.80, 4,246.74 and 981.48 is: 1,472.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.80 : 4,246.74 = 981.48 : x
  2. Step 2: Convert to fraction form
    2,830.80/4,246.74 = 981.48/x
  3. Step 3: Cross multiply
    2,830.80x = 4,246.74 × 981.48
  4. Step 4: Simplify right side
    2,830.80x = 4,168,090.38
  5. Step 5: Solve for x
    x = 4,168,090.38/2,830.80
  6. Step 6: Final answer
    x = 1,472.41

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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.