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Finding the Fourth Proportional to 9,319.80, 12,858.78 and 6,483.99

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Solution

The fourth proportional to 9,319.80, 12,858.78 and 6,483.99 is: 8,946.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.80 : 12,858.78 = 6,483.99 : x
  2. Step 2: Convert to fraction form
    9,319.80/12,858.78 = 6,483.99/x
  3. Step 3: Cross multiply
    9,319.80x = 12,858.78 × 6,483.99
  4. Step 4: Simplify right side
    9,319.80x = 83,376,200.93
  5. Step 5: Solve for x
    x = 83,376,200.93/9,319.80
  6. Step 6: Final answer
    x = 8,946.14

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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.