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Finding the Fourth Proportional to 9,398.94, 12,987.64 and 8,943.45

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Solution

The fourth proportional to 9,398.94, 12,987.64 and 8,943.45 is: 12,358.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,398.94 : 12,987.64 = 8,943.45 : x
  2. Step 2: Convert to fraction form
    9,398.94/12,987.64 = 8,943.45/x
  3. Step 3: Cross multiply
    9,398.94x = 12,987.64 × 8,943.45
  4. Step 4: Simplify right side
    9,398.94x = 116,154,221.66
  5. Step 5: Solve for x
    x = 116,154,221.66/9,398.94
  6. Step 6: Final answer
    x = 12,358.23

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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.