Home / 1,584.05-2,186.25-921.29

Finding the Fourth Proportional to 1,584.05, 2,186.25 and 921.29

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Solution

The fourth proportional to 1,584.05, 2,186.25 and 921.29 is: 1,271.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,584.05 : 2,186.25 = 921.29 : x
  2. Step 2: Convert to fraction form
    1,584.05/2,186.25 = 921.29/x
  3. Step 3: Cross multiply
    1,584.05x = 2,186.25 × 921.29
  4. Step 4: Simplify right side
    1,584.05x = 2,014,159.33
  5. Step 5: Solve for x
    x = 2,014,159.33/1,584.05
  6. Step 6: Final answer
    x = 1,271.53

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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.