Home / 9,725.15-13,422.35-5,636.34

Finding the Fourth Proportional to 9,725.15, 13,422.35 and 5,636.34

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Solution

The fourth proportional to 9,725.15, 13,422.35 and 5,636.34 is: 7,779.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,725.15 : 13,422.35 = 5,636.34 : x
  2. Step 2: Convert to fraction form
    9,725.15/13,422.35 = 5,636.34/x
  3. Step 3: Cross multiply
    9,725.15x = 13,422.35 × 5,636.34
  4. Step 4: Simplify right side
    9,725.15x = 75,652,960.92
  5. Step 5: Solve for x
    x = 75,652,960.92/9,725.15
  6. Step 6: Final answer
    x = 7,779.10

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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.