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Finding the Fourth Proportional to 2,303.12, 3,454.68 and 842.26

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Solution

The fourth proportional to 2,303.12, 3,454.68 and 842.26 is: 1,263.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,303.12 : 3,454.68 = 842.26 : x
  2. Step 2: Convert to fraction form
    2,303.12/3,454.68 = 842.26/x
  3. Step 3: Cross multiply
    2,303.12x = 3,454.68 × 842.26
  4. Step 4: Simplify right side
    2,303.12x = 2,909,738.78
  5. Step 5: Solve for x
    x = 2,909,738.78/2,303.12
  6. Step 6: Final answer
    x = 1,263.39

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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.