Home / 1,556.12-2,147.80-1,059.95

Finding the Fourth Proportional to 1,556.12, 2,147.80 and 1,059.95

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Solution

The fourth proportional to 1,556.12, 2,147.80 and 1,059.95 is: 1,462.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.12 : 2,147.80 = 1,059.95 : x
  2. Step 2: Convert to fraction form
    1,556.12/2,147.80 = 1,059.95/x
  3. Step 3: Cross multiply
    1,556.12x = 2,147.80 × 1,059.95
  4. Step 4: Simplify right side
    1,556.12x = 2,276,560.61
  5. Step 5: Solve for x
    x = 2,276,560.61/1,556.12
  6. Step 6: Final answer
    x = 1,462.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.