Home / 2,990.19-4,485.74-1,528.85

Finding the Fourth Proportional to 2,990.19, 4,485.74 and 1,528.85

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Solution

The fourth proportional to 2,990.19, 4,485.74 and 1,528.85 is: 2,293.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.19 : 4,485.74 = 1,528.85 : x
  2. Step 2: Convert to fraction form
    2,990.19/4,485.74 = 1,528.85/x
  3. Step 3: Cross multiply
    2,990.19x = 4,485.74 × 1,528.85
  4. Step 4: Simplify right side
    2,990.19x = 6,857,993.53
  5. Step 5: Solve for x
    x = 6,857,993.53/2,990.19
  6. Step 6: Final answer
    x = 2,293.50

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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.