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Finding the Fourth Proportional to 1,792.60, 2,690.34 and 971.44

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Solution

The fourth proportional to 1,792.60, 2,690.34 and 971.44 is: 1,457.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,792.60 : 2,690.34 = 971.44 : x
  2. Step 2: Convert to fraction form
    1,792.60/2,690.34 = 971.44/x
  3. Step 3: Cross multiply
    1,792.60x = 2,690.34 × 971.44
  4. Step 4: Simplify right side
    1,792.60x = 2,613,503.89
  5. Step 5: Solve for x
    x = 2,613,503.89/1,792.60
  6. Step 6: Final answer
    x = 1,457.94

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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.