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Finding the Fourth Proportional to 6,386.65, 8,783.84 and 5,125.73

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Solution

The fourth proportional to 6,386.65, 8,783.84 and 5,125.73 is: 7,049.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.65 : 8,783.84 = 5,125.73 : x
  2. Step 2: Convert to fraction form
    6,386.65/8,783.84 = 5,125.73/x
  3. Step 3: Cross multiply
    6,386.65x = 8,783.84 × 5,125.73
  4. Step 4: Simplify right side
    6,386.65x = 45,023,610.51
  5. Step 5: Solve for x
    x = 45,023,610.51/6,386.65
  6. Step 6: Final answer
    x = 7,049.65

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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.