Home / 1,556.68-2,147.16-1,322.20

Finding the Fourth Proportional to 1,556.68, 2,147.16 and 1,322.20

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Solution

The fourth proportional to 1,556.68, 2,147.16 and 1,322.20 is: 1,823.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.68 : 2,147.16 = 1,322.20 : x
  2. Step 2: Convert to fraction form
    1,556.68/2,147.16 = 1,322.20/x
  3. Step 3: Cross multiply
    1,556.68x = 2,147.16 × 1,322.20
  4. Step 4: Simplify right side
    1,556.68x = 2,838,974.95
  5. Step 5: Solve for x
    x = 2,838,974.95/1,556.68
  6. Step 6: Final answer
    x = 1,823.74

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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.