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Finding the Fourth Proportional to 8,144.95, 12,278.45 and 7,602.45

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Solution

The fourth proportional to 8,144.95, 12,278.45 and 7,602.45 is: 11,460.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,144.95 : 12,278.45 = 7,602.45 : x
  2. Step 2: Convert to fraction form
    8,144.95/12,278.45 = 7,602.45/x
  3. Step 3: Cross multiply
    8,144.95x = 12,278.45 × 7,602.45
  4. Step 4: Simplify right side
    8,144.95x = 93,346,240.81
  5. Step 5: Solve for x
    x = 93,346,240.81/8,144.95
  6. Step 6: Final answer
    x = 11,460.63

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.