Home / 1,695.90-2,339.37-1,223.27

Finding the Fourth Proportional to 1,695.90, 2,339.37 and 1,223.27

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Solution

The fourth proportional to 1,695.90, 2,339.37 and 1,223.27 is: 1,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.90 : 2,339.37 = 1,223.27 : x
  2. Step 2: Convert to fraction form
    1,695.90/2,339.37 = 1,223.27/x
  3. Step 3: Cross multiply
    1,695.90x = 2,339.37 × 1,223.27
  4. Step 4: Simplify right side
    1,695.90x = 2,861,669.44
  5. Step 5: Solve for x
    x = 2,861,669.44/1,695.90
  6. Step 6: Final answer
    x = 1,687.40

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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.