Home / 9,121.05-12,587.10-5,765.34

Finding the Fourth Proportional to 9,121.05, 12,587.10 and 5,765.34

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Solution

The fourth proportional to 9,121.05, 12,587.10 and 5,765.34 is: 7,956.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.05 : 12,587.10 = 5,765.34 : x
  2. Step 2: Convert to fraction form
    9,121.05/12,587.10 = 5,765.34/x
  3. Step 3: Cross multiply
    9,121.05x = 12,587.10 × 5,765.34
  4. Step 4: Simplify right side
    9,121.05x = 72,568,911.11
  5. Step 5: Solve for x
    x = 72,568,911.11/9,121.05
  6. Step 6: Final answer
    x = 7,956.20

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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.