Home / 8,686.37-11,986.99-4,909.52

Finding the Fourth Proportional to 8,686.37, 11,986.99 and 4,909.52

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Solution

The fourth proportional to 8,686.37, 11,986.99 and 4,909.52 is: 6,775.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.37 : 11,986.99 = 4,909.52 : x
  2. Step 2: Convert to fraction form
    8,686.37/11,986.99 = 4,909.52/x
  3. Step 3: Cross multiply
    8,686.37x = 11,986.99 × 4,909.52
  4. Step 4: Simplify right side
    8,686.37x = 58,850,384.84
  5. Step 5: Solve for x
    x = 58,850,384.84/8,686.37
  6. Step 6: Final answer
    x = 6,775.02

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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.