Home / 2,289.67-3,435.47-1,120.70

Finding the Fourth Proportional to 2,289.67, 3,435.47 and 1,120.70

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Solution

The fourth proportional to 2,289.67, 3,435.47 and 1,120.70 is: 1,681.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.67 : 3,435.47 = 1,120.70 : x
  2. Step 2: Convert to fraction form
    2,289.67/3,435.47 = 1,120.70/x
  3. Step 3: Cross multiply
    2,289.67x = 3,435.47 × 1,120.70
  4. Step 4: Simplify right side
    2,289.67x = 3,850,131.23
  5. Step 5: Solve for x
    x = 3,850,131.23/2,289.67
  6. Step 6: Final answer
    x = 1,681.52

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1.5x scale

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.