Home / 2,009.18-2,771.74-1,223.68

Finding the Fourth Proportional to 2,009.18, 2,771.74 and 1,223.68

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Solution

The fourth proportional to 2,009.18, 2,771.74 and 1,223.68 is: 1,688.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,009.18 : 2,771.74 = 1,223.68 : x
  2. Step 2: Convert to fraction form
    2,009.18/2,771.74 = 1,223.68/x
  3. Step 3: Cross multiply
    2,009.18x = 2,771.74 × 1,223.68
  4. Step 4: Simplify right side
    2,009.18x = 3,391,722.80
  5. Step 5: Solve for x
    x = 3,391,722.80/2,009.18
  6. Step 6: Final answer
    x = 1,688.11

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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.