Home / 1,709.06-2,559.02-1,089.40

Finding the Fourth Proportional to 1,709.06, 2,559.02 and 1,089.40

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Solution

The fourth proportional to 1,709.06, 2,559.02 and 1,089.40 is: 1,631.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.06 : 2,559.02 = 1,089.40 : x
  2. Step 2: Convert to fraction form
    1,709.06/2,559.02 = 1,089.40/x
  3. Step 3: Cross multiply
    1,709.06x = 2,559.02 × 1,089.40
  4. Step 4: Simplify right side
    1,709.06x = 2,787,796.39
  5. Step 5: Solve for x
    x = 2,787,796.39/1,709.06
  6. Step 6: Final answer
    x = 1,631.19

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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.