Home / 9,129.84-13,686.58-3,285.15

Finding the Fourth Proportional to 9,129.84, 13,686.58 and 3,285.15

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Solution

The fourth proportional to 9,129.84, 13,686.58 and 3,285.15 is: 4,924.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.84 : 13,686.58 = 3,285.15 : x
  2. Step 2: Convert to fraction form
    9,129.84/13,686.58 = 3,285.15/x
  3. Step 3: Cross multiply
    9,129.84x = 13,686.58 × 3,285.15
  4. Step 4: Simplify right side
    9,129.84x = 44,962,468.29
  5. Step 5: Solve for x
    x = 44,962,468.29/9,129.84
  6. Step 6: Final answer
    x = 4,924.78

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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.