Home / 1,984.56-2,976.55-1,389.77

Finding the Fourth Proportional to 1,984.56, 2,976.55 and 1,389.77

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Solution

The fourth proportional to 1,984.56, 2,976.55 and 1,389.77 is: 2,084.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.56 : 2,976.55 = 1,389.77 : x
  2. Step 2: Convert to fraction form
    1,984.56/2,976.55 = 1,389.77/x
  3. Step 3: Cross multiply
    1,984.56x = 2,976.55 × 1,389.77
  4. Step 4: Simplify right side
    1,984.56x = 4,136,712.94
  5. Step 5: Solve for x
    x = 4,136,712.94/1,984.56
  6. Step 6: Final answer
    x = 2,084.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.