Home / 9,511.13-13,126.34-5,478.09

Finding the Fourth Proportional to 9,511.13, 13,126.34 and 5,478.09

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Solution

The fourth proportional to 9,511.13, 13,126.34 and 5,478.09 is: 7,560.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,511.13 : 13,126.34 = 5,478.09 : x
  2. Step 2: Convert to fraction form
    9,511.13/13,126.34 = 5,478.09/x
  3. Step 3: Cross multiply
    9,511.13x = 13,126.34 × 5,478.09
  4. Step 4: Simplify right side
    9,511.13x = 71,907,195.28
  5. Step 5: Solve for x
    x = 71,907,195.28/9,511.13
  6. Step 6: Final answer
    x = 7,560.32

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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.