Home / 1,911.04-2,868.12-757.60

Finding the Fourth Proportional to 1,911.04, 2,868.12 and 757.60

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Solution

The fourth proportional to 1,911.04, 2,868.12 and 757.60 is: 1,137.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.04 : 2,868.12 = 757.60 : x
  2. Step 2: Convert to fraction form
    1,911.04/2,868.12 = 757.60/x
  3. Step 3: Cross multiply
    1,911.04x = 2,868.12 × 757.60
  4. Step 4: Simplify right side
    1,911.04x = 2,172,887.71
  5. Step 5: Solve for x
    x = 2,172,887.71/1,911.04
  6. Step 6: Final answer
    x = 1,137.02

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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.