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Finding the Fourth Proportional to 8,929.36, 12,320.02 and 7,035.07

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Solution

The fourth proportional to 8,929.36, 12,320.02 and 7,035.07 is: 9,706.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,929.36 : 12,320.02 = 7,035.07 : x
  2. Step 2: Convert to fraction form
    8,929.36/12,320.02 = 7,035.07/x
  3. Step 3: Cross multiply
    8,929.36x = 12,320.02 × 7,035.07
  4. Step 4: Simplify right side
    8,929.36x = 86,672,164.62
  5. Step 5: Solve for x
    x = 86,672,164.62/8,929.36
  6. Step 6: Final answer
    x = 9,706.43

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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.