Home / 2,686.47-4,030.20-1,021.08

Finding the Fourth Proportional to 2,686.47, 4,030.20 and 1,021.08

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Solution

The fourth proportional to 2,686.47, 4,030.20 and 1,021.08 is: 1,531.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.47 : 4,030.20 = 1,021.08 : x
  2. Step 2: Convert to fraction form
    2,686.47/4,030.20 = 1,021.08/x
  3. Step 3: Cross multiply
    2,686.47x = 4,030.20 × 1,021.08
  4. Step 4: Simplify right side
    2,686.47x = 4,115,171.73
  5. Step 5: Solve for x
    x = 4,115,171.73/2,686.47
  6. Step 6: Final answer
    x = 1,531.82

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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.