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Finding the Fourth Proportional to 8,687.37, 13,031.64 and 4,303.65

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Solution

The fourth proportional to 8,687.37, 13,031.64 and 4,303.65 is: 6,455.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.37 : 13,031.64 = 4,303.65 : x
  2. Step 2: Convert to fraction form
    8,687.37/13,031.64 = 4,303.65/x
  3. Step 3: Cross multiply
    8,687.37x = 13,031.64 × 4,303.65
  4. Step 4: Simplify right side
    8,687.37x = 56,083,617.49
  5. Step 5: Solve for x
    x = 56,083,617.49/8,687.37
  6. Step 6: Final answer
    x = 6,455.76

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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.