Home / 1,231.02-1,696.59-1,009.26

Finding the Fourth Proportional to 1,231.02, 1,696.59 and 1,009.26

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Solution

The fourth proportional to 1,231.02, 1,696.59 and 1,009.26 is: 1,390.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.02 : 1,696.59 = 1,009.26 : x
  2. Step 2: Convert to fraction form
    1,231.02/1,696.59 = 1,009.26/x
  3. Step 3: Cross multiply
    1,231.02x = 1,696.59 × 1,009.26
  4. Step 4: Simplify right side
    1,231.02x = 1,712,300.42
  5. Step 5: Solve for x
    x = 1,712,300.42/1,231.02
  6. Step 6: Final answer
    x = 1,390.96

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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.