Home / 1,448.34-1,999.68-976.94

Finding the Fourth Proportional to 1,448.34, 1,999.68 and 976.94

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Solution

The fourth proportional to 1,448.34, 1,999.68 and 976.94 is: 1,348.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,448.34 : 1,999.68 = 976.94 : x
  2. Step 2: Convert to fraction form
    1,448.34/1,999.68 = 976.94/x
  3. Step 3: Cross multiply
    1,448.34x = 1,999.68 × 976.94
  4. Step 4: Simplify right side
    1,448.34x = 1,953,567.38
  5. Step 5: Solve for x
    x = 1,953,567.38/1,448.34
  6. Step 6: Final answer
    x = 1,348.83

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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.