Home / 7,876.72-10,867.44-4,688.56

Finding the Fourth Proportional to 7,876.72, 10,867.44 and 4,688.56

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Solution

The fourth proportional to 7,876.72, 10,867.44 and 4,688.56 is: 6,468.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.72 : 10,867.44 = 4,688.56 : x
  2. Step 2: Convert to fraction form
    7,876.72/10,867.44 = 4,688.56/x
  3. Step 3: Cross multiply
    7,876.72x = 10,867.44 × 4,688.56
  4. Step 4: Simplify right side
    7,876.72x = 50,952,644.49
  5. Step 5: Solve for x
    x = 50,952,644.49/7,876.72
  6. Step 6: Final answer
    x = 6,468.76

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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.