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Finding the Fourth Proportional to 8,634.95, 12,889.39 and 7,410.23

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Solution

The fourth proportional to 8,634.95, 12,889.39 and 7,410.23 is: 11,061.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,634.95 : 12,889.39 = 7,410.23 : x
  2. Step 2: Convert to fraction form
    8,634.95/12,889.39 = 7,410.23/x
  3. Step 3: Cross multiply
    8,634.95x = 12,889.39 × 7,410.23
  4. Step 4: Simplify right side
    8,634.95x = 95,513,307.41
  5. Step 5: Solve for x
    x = 95,513,307.41/8,634.95
  6. Step 6: Final answer
    x = 11,061.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.