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Finding the Fourth Proportional to 2,583.80, 3,875.70 and 852.60

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Solution

The fourth proportional to 2,583.80, 3,875.70 and 852.60 is: 1,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,583.80 : 3,875.70 = 852.60 : x
  2. Step 2: Convert to fraction form
    2,583.80/3,875.70 = 852.60/x
  3. Step 3: Cross multiply
    2,583.80x = 3,875.70 × 852.60
  4. Step 4: Simplify right side
    2,583.80x = 3,304,421.82
  5. Step 5: Solve for x
    x = 3,304,421.82/2,583.80
  6. Step 6: Final answer
    x = 1,278.90

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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.