Home / 1,556.40-2,336.12-1,213.47

Finding the Fourth Proportional to 1,556.40, 2,336.12 and 1,213.47

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Solution

The fourth proportional to 1,556.40, 2,336.12 and 1,213.47 is: 1,821.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.40 : 2,336.12 = 1,213.47 : x
  2. Step 2: Convert to fraction form
    1,556.40/2,336.12 = 1,213.47/x
  3. Step 3: Cross multiply
    1,556.40x = 2,336.12 × 1,213.47
  4. Step 4: Simplify right side
    1,556.40x = 2,834,811.54
  5. Step 5: Solve for x
    x = 2,834,811.54/1,556.40
  6. Step 6: Final answer
    x = 1,821.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.