Home / 8,880.45-13,319.64-7,409.04

Finding the Fourth Proportional to 8,880.45, 13,319.64 and 7,409.04

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Solution

The fourth proportional to 8,880.45, 13,319.64 and 7,409.04 is: 11,112.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.45 : 13,319.64 = 7,409.04 : x
  2. Step 2: Convert to fraction form
    8,880.45/13,319.64 = 7,409.04/x
  3. Step 3: Cross multiply
    8,880.45x = 13,319.64 × 7,409.04
  4. Step 4: Simplify right side
    8,880.45x = 98,685,745.55
  5. Step 5: Solve for x
    x = 98,685,745.55/8,880.45
  6. Step 6: Final answer
    x = 11,112.70

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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.