Home / 1,890.45-2,607.58-1,144.64

Finding the Fourth Proportional to 1,890.45, 2,607.58 and 1,144.64

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Solution

The fourth proportional to 1,890.45, 2,607.58 and 1,144.64 is: 1,578.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.45 : 2,607.58 = 1,144.64 : x
  2. Step 2: Convert to fraction form
    1,890.45/2,607.58 = 1,144.64/x
  3. Step 3: Cross multiply
    1,890.45x = 2,607.58 × 1,144.64
  4. Step 4: Simplify right side
    1,890.45x = 2,984,740.37
  5. Step 5: Solve for x
    x = 2,984,740.37/1,890.45
  6. Step 6: Final answer
    x = 1,578.85

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1.5x scale

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.