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Finding the Fourth Proportional to 1,841.40, 2,762.08 and 866.80

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Solution

The fourth proportional to 1,841.40, 2,762.08 and 866.80 is: 1,300.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,841.40 : 2,762.08 = 866.80 : x
  2. Step 2: Convert to fraction form
    1,841.40/2,762.08 = 866.80/x
  3. Step 3: Cross multiply
    1,841.40x = 2,762.08 × 866.80
  4. Step 4: Simplify right side
    1,841.40x = 2,394,170.94
  5. Step 5: Solve for x
    x = 2,394,170.94/1,841.40
  6. Step 6: Final answer
    x = 1,300.19

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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.