Home / 2,489.99-3,434.75-1,556.87

Finding the Fourth Proportional to 2,489.99, 3,434.75 and 1,556.87

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Solution

The fourth proportional to 2,489.99, 3,434.75 and 1,556.87 is: 2,147.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.99 : 3,434.75 = 1,556.87 : x
  2. Step 2: Convert to fraction form
    2,489.99/3,434.75 = 1,556.87/x
  3. Step 3: Cross multiply
    2,489.99x = 3,434.75 × 1,556.87
  4. Step 4: Simplify right side
    2,489.99x = 5,347,434.27
  5. Step 5: Solve for x
    x = 5,347,434.27/2,489.99
  6. Step 6: Final answer
    x = 2,147.58

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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.