Home / 2,223.79-3,068.34-1,291.75

Finding the Fourth Proportional to 2,223.79, 3,068.34 and 1,291.75

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Solution

The fourth proportional to 2,223.79, 3,068.34 and 1,291.75 is: 1,782.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.79 : 3,068.34 = 1,291.75 : x
  2. Step 2: Convert to fraction form
    2,223.79/3,068.34 = 1,291.75/x
  3. Step 3: Cross multiply
    2,223.79x = 3,068.34 × 1,291.75
  4. Step 4: Simplify right side
    2,223.79x = 3,963,528.20
  5. Step 5: Solve for x
    x = 3,963,528.20/2,223.79
  6. Step 6: Final answer
    x = 1,782.33

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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.