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Finding the Fourth Proportional to 5,978.48, 8,967.51 and 2,860.65

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Solution

The fourth proportional to 5,978.48, 8,967.51 and 2,860.65 is: 4,290.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,978.48 : 8,967.51 = 2,860.65 : x
  2. Step 2: Convert to fraction form
    5,978.48/8,967.51 = 2,860.65/x
  3. Step 3: Cross multiply
    5,978.48x = 8,967.51 × 2,860.65
  4. Step 4: Simplify right side
    5,978.48x = 25,652,907.48
  5. Step 5: Solve for x
    x = 25,652,907.48/5,978.48
  6. Step 6: Final answer
    x = 4,290.88

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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.