Home / 11,390.78-17,088.67-3,494.38

Finding the Fourth Proportional to 11,390.78, 17,088.67 and 3,494.38

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Solution

The fourth proportional to 11,390.78, 17,088.67 and 3,494.38 is: 5,242.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.78 : 17,088.67 = 3,494.38 : x
  2. Step 2: Convert to fraction form
    11,390.78/17,088.67 = 3,494.38/x
  3. Step 3: Cross multiply
    11,390.78x = 17,088.67 × 3,494.38
  4. Step 4: Simplify right side
    11,390.78x = 59,714,203.76
  5. Step 5: Solve for x
    x = 59,714,203.76/11,390.78
  6. Step 6: Final answer
    x = 5,242.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.