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Finding the Fourth Proportional to 8,698.40, 12,003.68 and 4,719.40

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Solution

The fourth proportional to 8,698.40, 12,003.68 and 4,719.40 is: 6,512.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,698.40 : 12,003.68 = 4,719.40 : x
  2. Step 2: Convert to fraction form
    8,698.40/12,003.68 = 4,719.40/x
  3. Step 3: Cross multiply
    8,698.40x = 12,003.68 × 4,719.40
  4. Step 4: Simplify right side
    8,698.40x = 56,650,167.39
  5. Step 5: Solve for x
    x = 56,650,167.39/8,698.40
  6. Step 6: Final answer
    x = 6,512.71

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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.