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Finding the Fourth Proportional to 9,341.80, 12,899.46 and 8,345.32

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Solution

The fourth proportional to 9,341.80, 12,899.46 and 8,345.32 is: 11,523.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,341.80 : 12,899.46 = 8,345.32 : x
  2. Step 2: Convert to fraction form
    9,341.80/12,899.46 = 8,345.32/x
  3. Step 3: Cross multiply
    9,341.80x = 12,899.46 × 8,345.32
  4. Step 4: Simplify right side
    9,341.80x = 107,650,121.53
  5. Step 5: Solve for x
    x = 107,650,121.53/9,341.80
  6. Step 6: Final answer
    x = 11,523.49

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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.