Home / 1,745.50-2,409.40-1,223.06

Finding the Fourth Proportional to 1,745.50, 2,409.40 and 1,223.06

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Solution

The fourth proportional to 1,745.50, 2,409.40 and 1,223.06 is: 1,688.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.50 : 2,409.40 = 1,223.06 : x
  2. Step 2: Convert to fraction form
    1,745.50/2,409.40 = 1,223.06/x
  3. Step 3: Cross multiply
    1,745.50x = 2,409.40 × 1,223.06
  4. Step 4: Simplify right side
    1,745.50x = 2,946,840.76
  5. Step 5: Solve for x
    x = 2,946,840.76/1,745.50
  6. Step 6: Final answer
    x = 1,688.25

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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.