Home / 1,853.12-2,556.16-1,223.84

Finding the Fourth Proportional to 1,853.12, 2,556.16 and 1,223.84

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Solution

The fourth proportional to 1,853.12, 2,556.16 and 1,223.84 is: 1,688.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,853.12 : 2,556.16 = 1,223.84 : x
  2. Step 2: Convert to fraction form
    1,853.12/2,556.16 = 1,223.84/x
  3. Step 3: Cross multiply
    1,853.12x = 2,556.16 × 1,223.84
  4. Step 4: Simplify right side
    1,853.12x = 3,128,330.85
  5. Step 5: Solve for x
    x = 3,128,330.85/1,853.12
  6. Step 6: Final answer
    x = 1,688.14

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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.