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Finding the Fourth Proportional to 9,180.95, 12,670.79 and 5,454.95

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Solution

The fourth proportional to 9,180.95, 12,670.79 and 5,454.95 is: 7,528.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,180.95 : 12,670.79 = 5,454.95 : x
  2. Step 2: Convert to fraction form
    9,180.95/12,670.79 = 5,454.95/x
  3. Step 3: Cross multiply
    9,180.95x = 12,670.79 × 5,454.95
  4. Step 4: Simplify right side
    9,180.95x = 69,118,435.28
  5. Step 5: Solve for x
    x = 69,118,435.28/9,180.95
  6. Step 6: Final answer
    x = 7,528.47

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Half scale
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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.