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Finding the Fourth Proportional to 10,653.84, 15,978.96 and 2,860.92

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Solution

The fourth proportional to 10,653.84, 15,978.96 and 2,860.92 is: 4,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,653.84 : 15,978.96 = 2,860.92 : x
  2. Step 2: Convert to fraction form
    10,653.84/15,978.96 = 2,860.92/x
  3. Step 3: Cross multiply
    10,653.84x = 15,978.96 × 2,860.92
  4. Step 4: Simplify right side
    10,653.84x = 45,714,526.24
  5. Step 5: Solve for x
    x = 45,714,526.24/10,653.84
  6. Step 6: Final answer
    x = 4,290.90

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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.