Home / 7,768.68-10,721-4,232.12

Finding the Fourth Proportional to 7,768.68, 10,721 and 4,232.12

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Solution

The fourth proportional to 7,768.68, 10,721 and 4,232.12 is: 5,840.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,768.68 : 10,721 = 4,232.12 : x
  2. Step 2: Convert to fraction form
    7,768.68/10,721 = 4,232.12/x
  3. Step 3: Cross multiply
    7,768.68x = 10,721 × 4,232.12
  4. Step 4: Simplify right side
    7,768.68x = 45,372,558.52
  5. Step 5: Solve for x
    x = 45,372,558.52/7,768.68
  6. Step 6: Final answer
    x = 5,840.45

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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.