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Finding the Fourth Proportional to 2,316.14, 3,474.21 and 778.22

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Solution

The fourth proportional to 2,316.14, 3,474.21 and 778.22 is: 1,167.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,316.14 : 3,474.21 = 778.22 : x
  2. Step 2: Convert to fraction form
    2,316.14/3,474.21 = 778.22/x
  3. Step 3: Cross multiply
    2,316.14x = 3,474.21 × 778.22
  4. Step 4: Simplify right side
    2,316.14x = 2,703,699.71
  5. Step 5: Solve for x
    x = 2,703,699.71/2,316.14
  6. Step 6: Final answer
    x = 1,167.33

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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.