Home / 9,210.80-13,817.21-2,638.05

Finding the Fourth Proportional to 9,210.80, 13,817.21 and 2,638.05

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Solution

The fourth proportional to 9,210.80, 13,817.21 and 2,638.05 is: 3,957.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,210.80 : 13,817.21 = 2,638.05 : x
  2. Step 2: Convert to fraction form
    9,210.80/13,817.21 = 2,638.05/x
  3. Step 3: Cross multiply
    9,210.80x = 13,817.21 × 2,638.05
  4. Step 4: Simplify right side
    9,210.80x = 36,450,477.65
  5. Step 5: Solve for x
    x = 36,450,477.65/9,210.80
  6. Step 6: Final answer
    x = 3,957.36

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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.