Home / 9,219.90-13,830.24-2,645.40

Finding the Fourth Proportional to 9,219.90, 13,830.24 and 2,645.40

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Solution

The fourth proportional to 9,219.90, 13,830.24 and 2,645.40 is: 3,968.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,219.90 : 13,830.24 = 2,645.40 : x
  2. Step 2: Convert to fraction form
    9,219.90/13,830.24 = 2,645.40/x
  3. Step 3: Cross multiply
    9,219.90x = 13,830.24 × 2,645.40
  4. Step 4: Simplify right side
    9,219.90x = 36,586,516.90
  5. Step 5: Solve for x
    x = 36,586,516.90/9,219.90
  6. Step 6: Final answer
    x = 3,968.21

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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.