Home / 1,316.08-1,816.80-1,001.44

Finding the Fourth Proportional to 1,316.08, 1,816.80 and 1,001.44

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Solution

The fourth proportional to 1,316.08, 1,816.80 and 1,001.44 is: 1,382.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.08 : 1,816.80 = 1,001.44 : x
  2. Step 2: Convert to fraction form
    1,316.08/1,816.80 = 1,001.44/x
  3. Step 3: Cross multiply
    1,316.08x = 1,816.80 × 1,001.44
  4. Step 4: Simplify right side
    1,316.08x = 1,819,416.19
  5. Step 5: Solve for x
    x = 1,819,416.19/1,316.08
  6. Step 6: Final answer
    x = 1,382.45

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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.