Home / 1,299.64-1,946.53-911.37

Finding the Fourth Proportional to 1,299.64, 1,946.53 and 911.37

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Solution

The fourth proportional to 1,299.64, 1,946.53 and 911.37 is: 1,365.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.64 : 1,946.53 = 911.37 : x
  2. Step 2: Convert to fraction form
    1,299.64/1,946.53 = 911.37/x
  3. Step 3: Cross multiply
    1,299.64x = 1,946.53 × 911.37
  4. Step 4: Simplify right side
    1,299.64x = 1,774,009.05
  5. Step 5: Solve for x
    x = 1,774,009.05/1,299.64
  6. Step 6: Final answer
    x = 1,365.00

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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.