Home / 9,355.96-12,911.52-5,164.12

Finding the Fourth Proportional to 9,355.96, 12,911.52 and 5,164.12

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Solution

The fourth proportional to 9,355.96, 12,911.52 and 5,164.12 is: 7,126.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.96 : 12,911.52 = 5,164.12 : x
  2. Step 2: Convert to fraction form
    9,355.96/12,911.52 = 5,164.12/x
  3. Step 3: Cross multiply
    9,355.96x = 12,911.52 × 5,164.12
  4. Step 4: Simplify right side
    9,355.96x = 66,676,638.66
  5. Step 5: Solve for x
    x = 66,676,638.66/9,355.96
  6. Step 6: Final answer
    x = 7,126.65

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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.