Home / 9,880.99-13,635.97-5,405.03

Finding the Fourth Proportional to 9,880.99, 13,635.97 and 5,405.03

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Solution

The fourth proportional to 9,880.99, 13,635.97 and 5,405.03 is: 7,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,880.99 : 13,635.97 = 5,405.03 : x
  2. Step 2: Convert to fraction form
    9,880.99/13,635.97 = 5,405.03/x
  3. Step 3: Cross multiply
    9,880.99x = 13,635.97 × 5,405.03
  4. Step 4: Simplify right side
    9,880.99x = 73,702,826.93
  5. Step 5: Solve for x
    x = 73,702,826.93/9,880.99
  6. Step 6: Final answer
    x = 7,459.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.