Home / 1,861.09-2,792.10-1,314.34

Finding the Fourth Proportional to 1,861.09, 2,792.10 and 1,314.34

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Solution

The fourth proportional to 1,861.09, 2,792.10 and 1,314.34 is: 1,971.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.09 : 2,792.10 = 1,314.34 : x
  2. Step 2: Convert to fraction form
    1,861.09/2,792.10 = 1,314.34/x
  3. Step 3: Cross multiply
    1,861.09x = 2,792.10 × 1,314.34
  4. Step 4: Simplify right side
    1,861.09x = 3,669,768.71
  5. Step 5: Solve for x
    x = 3,669,768.71/1,861.09
  6. Step 6: Final answer
    x = 1,971.84

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1.5x scale

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.