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Finding the Fourth Proportional to 8,698.50, 12,003.95 and 4,719.64

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Solution

The fourth proportional to 8,698.50, 12,003.95 and 4,719.64 is: 6,513.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,698.50 : 12,003.95 = 4,719.64 : x
  2. Step 2: Convert to fraction form
    8,698.50/12,003.95 = 4,719.64/x
  3. Step 3: Cross multiply
    8,698.50x = 12,003.95 × 4,719.64
  4. Step 4: Simplify right side
    8,698.50x = 56,654,322.58
  5. Step 5: Solve for x
    x = 56,654,322.58/8,698.50
  6. Step 6: Final answer
    x = 6,513.11

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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.