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Finding the Fourth Proportional to 8,403.85, 12,606.48 and 2,560.51

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Solution

The fourth proportional to 8,403.85, 12,606.48 and 2,560.51 is: 3,840.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,403.85 : 12,606.48 = 2,560.51 : x
  2. Step 2: Convert to fraction form
    8,403.85/12,606.48 = 2,560.51/x
  3. Step 3: Cross multiply
    8,403.85x = 12,606.48 × 2,560.51
  4. Step 4: Simplify right side
    8,403.85x = 32,279,018.10
  5. Step 5: Solve for x
    x = 32,279,018.10/8,403.85
  6. Step 6: Final answer
    x = 3,840.98

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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.