Home / 2,551.36-3,521.28-1,556.86

Finding the Fourth Proportional to 2,551.36, 3,521.28 and 1,556.86

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Solution

The fourth proportional to 2,551.36, 3,521.28 and 1,556.86 is: 2,148.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,551.36 : 3,521.28 = 1,556.86 : x
  2. Step 2: Convert to fraction form
    2,551.36/3,521.28 = 1,556.86/x
  3. Step 3: Cross multiply
    2,551.36x = 3,521.28 × 1,556.86
  4. Step 4: Simplify right side
    2,551.36x = 5,482,139.98
  5. Step 5: Solve for x
    x = 5,482,139.98/2,551.36
  6. Step 6: Final answer
    x = 2,148.71

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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.