Home / 7,404.80-11,107.20-3,718.40

Finding the Fourth Proportional to 7,404.80, 11,107.20 and 3,718.40

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Solution

The fourth proportional to 7,404.80, 11,107.20 and 3,718.40 is: 5,577.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,404.80 : 11,107.20 = 3,718.40 : x
  2. Step 2: Convert to fraction form
    7,404.80/11,107.20 = 3,718.40/x
  3. Step 3: Cross multiply
    7,404.80x = 11,107.20 × 3,718.40
  4. Step 4: Simplify right side
    7,404.80x = 41,301,012.48
  5. Step 5: Solve for x
    x = 41,301,012.48/7,404.80
  6. Step 6: Final answer
    x = 5,577.60

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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.