Home / 7,685.61-11,528.36-2,138.95

Finding the Fourth Proportional to 7,685.61, 11,528.36 and 2,138.95

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Solution

The fourth proportional to 7,685.61, 11,528.36 and 2,138.95 is: 3,208.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.61 : 11,528.36 = 2,138.95 : x
  2. Step 2: Convert to fraction form
    7,685.61/11,528.36 = 2,138.95/x
  3. Step 3: Cross multiply
    7,685.61x = 11,528.36 × 2,138.95
  4. Step 4: Simplify right side
    7,685.61x = 24,658,585.62
  5. Step 5: Solve for x
    x = 24,658,585.62/7,685.61
  6. Step 6: Final answer
    x = 3,208.41

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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.