Home / 1,584.70-2,186.62-921.58

Finding the Fourth Proportional to 1,584.70, 2,186.62 and 921.58

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Solution

The fourth proportional to 1,584.70, 2,186.62 and 921.58 is: 1,271.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,584.70 : 2,186.62 = 921.58 : x
  2. Step 2: Convert to fraction form
    1,584.70/2,186.62 = 921.58/x
  3. Step 3: Cross multiply
    1,584.70x = 2,186.62 × 921.58
  4. Step 4: Simplify right side
    1,584.70x = 2,015,137.49
  5. Step 5: Solve for x
    x = 2,015,137.49/1,584.70
  6. Step 6: Final answer
    x = 1,271.62

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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.