Home / 4,990.17-7,485.21-1,912.17

Finding the Fourth Proportional to 4,990.17, 7,485.21 and 1,912.17

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Solution

The fourth proportional to 4,990.17, 7,485.21 and 1,912.17 is: 2,868.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.17 : 7,485.21 = 1,912.17 : x
  2. Step 2: Convert to fraction form
    4,990.17/7,485.21 = 1,912.17/x
  3. Step 3: Cross multiply
    4,990.17x = 7,485.21 × 1,912.17
  4. Step 4: Simplify right side
    4,990.17x = 14,312,994.01
  5. Step 5: Solve for x
    x = 14,312,994.01/4,990.17
  6. Step 6: Final answer
    x = 2,868.24

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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.