Home / 7,389.05-11,085.39-6,781.55

Finding the Fourth Proportional to 7,389.05, 11,085.39 and 6,781.55

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Solution

The fourth proportional to 7,389.05, 11,085.39 and 6,781.55 is: 10,173.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,389.05 : 11,085.39 = 6,781.55 : x
  2. Step 2: Convert to fraction form
    7,389.05/11,085.39 = 6,781.55/x
  3. Step 3: Cross multiply
    7,389.05x = 11,085.39 × 6,781.55
  4. Step 4: Simplify right side
    7,389.05x = 75,176,071.13
  5. Step 5: Solve for x
    x = 75,176,071.13/7,389.05
  6. Step 6: Final answer
    x = 10,173.99

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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.