Home / 2,790.34-4,179.08-1,555.01

Finding the Fourth Proportional to 2,790.34, 4,179.08 and 1,555.01

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Solution

The fourth proportional to 2,790.34, 4,179.08 and 1,555.01 is: 2,328.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.34 : 4,179.08 = 1,555.01 : x
  2. Step 2: Convert to fraction form
    2,790.34/4,179.08 = 1,555.01/x
  3. Step 3: Cross multiply
    2,790.34x = 4,179.08 × 1,555.01
  4. Step 4: Simplify right side
    2,790.34x = 6,498,509.85
  5. Step 5: Solve for x
    x = 6,498,509.85/2,790.34
  6. Step 6: Final answer
    x = 2,328.93

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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.