Home / 7,409.60-11,114.40-6,257.60

Finding the Fourth Proportional to 7,409.60, 11,114.40 and 6,257.60

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Solution

The fourth proportional to 7,409.60, 11,114.40 and 6,257.60 is: 9,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,409.60 : 11,114.40 = 6,257.60 : x
  2. Step 2: Convert to fraction form
    7,409.60/11,114.40 = 6,257.60/x
  3. Step 3: Cross multiply
    7,409.60x = 11,114.40 × 6,257.60
  4. Step 4: Simplify right side
    7,409.60x = 69,549,469.44
  5. Step 5: Solve for x
    x = 69,549,469.44/7,409.60
  6. Step 6: Final answer
    x = 9,386.40

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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.