Home / 7,784.78-10,743.23-4,428.07

Finding the Fourth Proportional to 7,784.78, 10,743.23 and 4,428.07

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Solution

The fourth proportional to 7,784.78, 10,743.23 and 4,428.07 is: 6,110.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,784.78 : 10,743.23 = 4,428.07 : x
  2. Step 2: Convert to fraction form
    7,784.78/10,743.23 = 4,428.07/x
  3. Step 3: Cross multiply
    7,784.78x = 10,743.23 × 4,428.07
  4. Step 4: Simplify right side
    7,784.78x = 47,571,725.47
  5. Step 5: Solve for x
    x = 47,571,725.47/7,784.78
  6. Step 6: Final answer
    x = 6,110.87

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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.