Home / 9,135.68-12,609.33-5,359.01

Finding the Fourth Proportional to 9,135.68, 12,609.33 and 5,359.01

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Solution

The fourth proportional to 9,135.68, 12,609.33 and 5,359.01 is: 7,396.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.68 : 12,609.33 = 5,359.01 : x
  2. Step 2: Convert to fraction form
    9,135.68/12,609.33 = 5,359.01/x
  3. Step 3: Cross multiply
    9,135.68x = 12,609.33 × 5,359.01
  4. Step 4: Simplify right side
    9,135.68x = 67,573,496.21
  5. Step 5: Solve for x
    x = 67,573,496.21/9,135.68
  6. Step 6: Final answer
    x = 7,396.66

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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.