Home / 2,180.21-3,007.70-1,295.49

Finding the Fourth Proportional to 2,180.21, 3,007.70 and 1,295.49

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Solution

The fourth proportional to 2,180.21, 3,007.70 and 1,295.49 is: 1,787.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.21 : 3,007.70 = 1,295.49 : x
  2. Step 2: Convert to fraction form
    2,180.21/3,007.70 = 1,295.49/x
  3. Step 3: Cross multiply
    2,180.21x = 3,007.70 × 1,295.49
  4. Step 4: Simplify right side
    2,180.21x = 3,896,445.27
  5. Step 5: Solve for x
    x = 3,896,445.27/2,180.21
  6. Step 6: Final answer
    x = 1,787.19

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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.