Home / 4,990.32-7,485.60-1,292.58

Finding the Fourth Proportional to 4,990.32, 7,485.60 and 1,292.58

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Solution

The fourth proportional to 4,990.32, 7,485.60 and 1,292.58 is: 1,938.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.32 : 7,485.60 = 1,292.58 : x
  2. Step 2: Convert to fraction form
    4,990.32/7,485.60 = 1,292.58/x
  3. Step 3: Cross multiply
    4,990.32x = 7,485.60 × 1,292.58
  4. Step 4: Simplify right side
    4,990.32x = 9,675,736.85
  5. Step 5: Solve for x
    x = 9,675,736.85/4,990.32
  6. Step 6: Final answer
    x = 1,938.90

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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.