Home / 2,035.50-2,809.10-1,289.20

Finding the Fourth Proportional to 2,035.50, 2,809.10 and 1,289.20

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Solution

The fourth proportional to 2,035.50, 2,809.10 and 1,289.20 is: 1,779.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,035.50 : 2,809.10 = 1,289.20 : x
  2. Step 2: Convert to fraction form
    2,035.50/2,809.10 = 1,289.20/x
  3. Step 3: Cross multiply
    2,035.50x = 2,809.10 × 1,289.20
  4. Step 4: Simplify right side
    2,035.50x = 3,621,491.72
  5. Step 5: Solve for x
    x = 3,621,491.72/2,035.50
  6. Step 6: Final answer
    x = 1,779.17

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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.