Home / 1,989.93-2,985.74-1,065.25

Finding the Fourth Proportional to 1,989.93, 2,985.74 and 1,065.25

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Solution

The fourth proportional to 1,989.93, 2,985.74 and 1,065.25 is: 1,598.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.93 : 2,985.74 = 1,065.25 : x
  2. Step 2: Convert to fraction form
    1,989.93/2,985.74 = 1,065.25/x
  3. Step 3: Cross multiply
    1,989.93x = 2,985.74 × 1,065.25
  4. Step 4: Simplify right side
    1,989.93x = 3,180,559.54
  5. Step 5: Solve for x
    x = 3,180,559.54/1,989.93
  6. Step 6: Final answer
    x = 1,598.33

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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.