Home / 9,145.36-12,620.76-5,166.52

Finding the Fourth Proportional to 9,145.36, 12,620.76 and 5,166.52

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Solution

The fourth proportional to 9,145.36, 12,620.76 and 5,166.52 is: 7,129.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.36 : 12,620.76 = 5,166.52 : x
  2. Step 2: Convert to fraction form
    9,145.36/12,620.76 = 5,166.52/x
  3. Step 3: Cross multiply
    9,145.36x = 12,620.76 × 5,166.52
  4. Step 4: Simplify right side
    9,145.36x = 65,205,408.96
  5. Step 5: Solve for x
    x = 65,205,408.96/9,145.36
  6. Step 6: Final answer
    x = 7,129.89

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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.