Home / 2,333.93-3,220.43-1,389.60

Finding the Fourth Proportional to 2,333.93, 3,220.43 and 1,389.60

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Solution

The fourth proportional to 2,333.93, 3,220.43 and 1,389.60 is: 1,917.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,333.93 : 3,220.43 = 1,389.60 : x
  2. Step 2: Convert to fraction form
    2,333.93/3,220.43 = 1,389.60/x
  3. Step 3: Cross multiply
    2,333.93x = 3,220.43 × 1,389.60
  4. Step 4: Simplify right side
    2,333.93x = 4,475,102.58
  5. Step 5: Solve for x
    x = 4,475,102.58/2,333.93
  6. Step 6: Final answer
    x = 1,917.41

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1.5x scale

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.