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Finding the Fourth Proportional to 8,655.63, 12,985.62 and 2,499.63

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Solution

The fourth proportional to 8,655.63, 12,985.62 and 2,499.63 is: 3,750.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.63 : 12,985.62 = 2,499.63 : x
  2. Step 2: Convert to fraction form
    8,655.63/12,985.62 = 2,499.63/x
  3. Step 3: Cross multiply
    8,655.63x = 12,985.62 × 2,499.63
  4. Step 4: Simplify right side
    8,655.63x = 32,459,245.32
  5. Step 5: Solve for x
    x = 32,459,245.32/8,655.63
  6. Step 6: Final answer
    x = 3,750.07

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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.