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Finding the Fourth Proportional to 8,703.58, 13,018.31 and 5,185.55

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Solution

The fourth proportional to 8,703.58, 13,018.31 and 5,185.55 is: 7,756.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703.58 : 13,018.31 = 5,185.55 : x
  2. Step 2: Convert to fraction form
    8,703.58/13,018.31 = 5,185.55/x
  3. Step 3: Cross multiply
    8,703.58x = 13,018.31 × 5,185.55
  4. Step 4: Simplify right side
    8,703.58x = 67,507,097.42
  5. Step 5: Solve for x
    x = 67,507,097.42/8,703.58
  6. Step 6: Final answer
    x = 7,756.24

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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.