Home / 1,756.40-2,630.55-1,205.60

Finding the Fourth Proportional to 1,756.40, 2,630.55 and 1,205.60

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Solution

The fourth proportional to 1,756.40, 2,630.55 and 1,205.60 is: 1,805.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,756.40 : 2,630.55 = 1,205.60 : x
  2. Step 2: Convert to fraction form
    1,756.40/2,630.55 = 1,205.60/x
  3. Step 3: Cross multiply
    1,756.40x = 2,630.55 × 1,205.60
  4. Step 4: Simplify right side
    1,756.40x = 3,171,391.08
  5. Step 5: Solve for x
    x = 3,171,391.08/1,756.40
  6. Step 6: Final answer
    x = 1,805.62

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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.