Home / 2,430.78-3,647.24-1,276.26

Finding the Fourth Proportional to 2,430.78, 3,647.24 and 1,276.26

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Solution

The fourth proportional to 2,430.78, 3,647.24 and 1,276.26 is: 1,914.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.78 : 3,647.24 = 1,276.26 : x
  2. Step 2: Convert to fraction form
    2,430.78/3,647.24 = 1,276.26/x
  3. Step 3: Cross multiply
    2,430.78x = 3,647.24 × 1,276.26
  4. Step 4: Simplify right side
    2,430.78x = 4,654,826.52
  5. Step 5: Solve for x
    x = 4,654,826.52/2,430.78
  6. Step 6: Final answer
    x = 1,914.95

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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.