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Finding the Fourth Proportional to 9,387.58, 12,941.06 and 7,145.55

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Solution

The fourth proportional to 9,387.58, 12,941.06 and 7,145.55 is: 9,850.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,387.58 : 12,941.06 = 7,145.55 : x
  2. Step 2: Convert to fraction form
    9,387.58/12,941.06 = 7,145.55/x
  3. Step 3: Cross multiply
    9,387.58x = 12,941.06 × 7,145.55
  4. Step 4: Simplify right side
    9,387.58x = 92,470,991.28
  5. Step 5: Solve for x
    x = 92,470,991.28/9,387.58
  6. Step 6: Final answer
    x = 9,850.35

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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.