Home / 2,135.19-2,945.75-1,295.60

Finding the Fourth Proportional to 2,135.19, 2,945.75 and 1,295.60

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Solution

The fourth proportional to 2,135.19, 2,945.75 and 1,295.60 is: 1,787.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.19 : 2,945.75 = 1,295.60 : x
  2. Step 2: Convert to fraction form
    2,135.19/2,945.75 = 1,295.60/x
  3. Step 3: Cross multiply
    2,135.19x = 2,945.75 × 1,295.60
  4. Step 4: Simplify right side
    2,135.19x = 3,816,492.49
  5. Step 5: Solve for x
    x = 3,816,492.49/2,135.19
  6. Step 6: Final answer
    x = 1,787.42

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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.