Home / 3,015.10-4,520.40-1,555.30

Finding the Fourth Proportional to 3,015.10, 4,520.40 and 1,555.30

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Solution

The fourth proportional to 3,015.10, 4,520.40 and 1,555.30 is: 2,331.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.10 : 4,520.40 = 1,555.30 : x
  2. Step 2: Convert to fraction form
    3,015.10/4,520.40 = 1,555.30/x
  3. Step 3: Cross multiply
    3,015.10x = 4,520.40 × 1,555.30
  4. Step 4: Simplify right side
    3,015.10x = 7,030,578.12
  5. Step 5: Solve for x
    x = 7,030,578.12/3,015.10
  6. Step 6: Final answer
    x = 2,331.79

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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.