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Finding the Fourth Proportional to 2,686.50, 4,030.02 and 955.80

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Solution

The fourth proportional to 2,686.50, 4,030.02 and 955.80 is: 1,433.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.50 : 4,030.02 = 955.80 : x
  2. Step 2: Convert to fraction form
    2,686.50/4,030.02 = 955.80/x
  3. Step 3: Cross multiply
    2,686.50x = 4,030.02 × 955.80
  4. Step 4: Simplify right side
    2,686.50x = 3,851,893.12
  5. Step 5: Solve for x
    x = 3,851,893.12/2,686.50
  6. Step 6: Final answer
    x = 1,433.80

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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.