Home / 9,390.21-12,959.10-5,412.30

Finding the Fourth Proportional to 9,390.21, 12,959.10 and 5,412.30

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Solution

The fourth proportional to 9,390.21, 12,959.10 and 5,412.30 is: 7,469.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,390.21 : 12,959.10 = 5,412.30 : x
  2. Step 2: Convert to fraction form
    9,390.21/12,959.10 = 5,412.30/x
  3. Step 3: Cross multiply
    9,390.21x = 12,959.10 × 5,412.30
  4. Step 4: Simplify right side
    9,390.21x = 70,138,536.93
  5. Step 5: Solve for x
    x = 70,138,536.93/9,390.21
  6. Step 6: Final answer
    x = 7,469.33

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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.