Home / 1,316.36-1,816.80-1,258.04

Finding the Fourth Proportional to 1,316.36, 1,816.80 and 1,258.04

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Solution

The fourth proportional to 1,316.36, 1,816.80 and 1,258.04 is: 1,736.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.36 : 1,816.80 = 1,258.04 : x
  2. Step 2: Convert to fraction form
    1,316.36/1,816.80 = 1,258.04/x
  3. Step 3: Cross multiply
    1,316.36x = 1,816.80 × 1,258.04
  4. Step 4: Simplify right side
    1,316.36x = 2,285,607.07
  5. Step 5: Solve for x
    x = 2,285,607.07/1,316.36
  6. Step 6: Final answer
    x = 1,736.31

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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.