Home / 2,315.45-3,480.70-1,858.23

Finding the Fourth Proportional to 2,315.45, 3,480.70 and 1,858.23

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Solution

The fourth proportional to 2,315.45, 3,480.70 and 1,858.23 is: 2,793.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.45 : 3,480.70 = 1,858.23 : x
  2. Step 2: Convert to fraction form
    2,315.45/3,480.70 = 1,858.23/x
  3. Step 3: Cross multiply
    2,315.45x = 3,480.70 × 1,858.23
  4. Step 4: Simplify right side
    2,315.45x = 6,467,941.16
  5. Step 5: Solve for x
    x = 6,467,941.16/2,315.45
  6. Step 6: Final answer
    x = 2,793.38

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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.