Home / 1,370.50-1,893.78-976.84

Finding the Fourth Proportional to 1,370.50, 1,893.78 and 976.84

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Solution

The fourth proportional to 1,370.50, 1,893.78 and 976.84 is: 1,349.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.50 : 1,893.78 = 976.84 : x
  2. Step 2: Convert to fraction form
    1,370.50/1,893.78 = 976.84/x
  3. Step 3: Cross multiply
    1,370.50x = 1,893.78 × 976.84
  4. Step 4: Simplify right side
    1,370.50x = 1,849,920.06
  5. Step 5: Solve for x
    x = 1,849,920.06/1,370.50
  6. Step 6: Final answer
    x = 1,349.81

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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.