Home / 1,861.55-2,569.40-1,076.05

Finding the Fourth Proportional to 1,861.55, 2,569.40 and 1,076.05

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Solution

The fourth proportional to 1,861.55, 2,569.40 and 1,076.05 is: 1,485.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.55 : 2,569.40 = 1,076.05 : x
  2. Step 2: Convert to fraction form
    1,861.55/2,569.40 = 1,076.05/x
  3. Step 3: Cross multiply
    1,861.55x = 2,569.40 × 1,076.05
  4. Step 4: Simplify right side
    1,861.55x = 2,764,802.87
  5. Step 5: Solve for x
    x = 2,764,802.87/1,861.55
  6. Step 6: Final answer
    x = 1,485.22

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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.