Home / 1,559.79-2,147.18-1,205.01

Finding the Fourth Proportional to 1,559.79, 2,147.18 and 1,205.01

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Solution

The fourth proportional to 1,559.79, 2,147.18 and 1,205.01 is: 1,658.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.79 : 2,147.18 = 1,205.01 : x
  2. Step 2: Convert to fraction form
    1,559.79/2,147.18 = 1,205.01/x
  3. Step 3: Cross multiply
    1,559.79x = 2,147.18 × 1,205.01
  4. Step 4: Simplify right side
    1,559.79x = 2,587,367.35
  5. Step 5: Solve for x
    x = 2,587,367.35/1,559.79
  6. Step 6: Final answer
    x = 1,658.79

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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.