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Finding the Fourth Proportional to 10,410.10, 15,615 and 2,618.86

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Solution

The fourth proportional to 10,410.10, 15,615 and 2,618.86 is: 3,928.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,410.10 : 15,615 = 2,618.86 : x
  2. Step 2: Convert to fraction form
    10,410.10/15,615 = 2,618.86/x
  3. Step 3: Cross multiply
    10,410.10x = 15,615 × 2,618.86
  4. Step 4: Simplify right side
    10,410.10x = 40,893,498.90
  5. Step 5: Solve for x
    x = 40,893,498.90/10,410.10
  6. Step 6: Final answer
    x = 3,928.25

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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.