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Finding the Fourth Proportional to 8,345.40, 12,548.10 and 7,695.22

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Solution

The fourth proportional to 8,345.40, 12,548.10 and 7,695.22 is: 11,570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.40 : 12,548.10 = 7,695.22 : x
  2. Step 2: Convert to fraction form
    8,345.40/12,548.10 = 7,695.22/x
  3. Step 3: Cross multiply
    8,345.40x = 12,548.10 × 7,695.22
  4. Step 4: Simplify right side
    8,345.40x = 96,560,390.08
  5. Step 5: Solve for x
    x = 96,560,390.08/8,345.40
  6. Step 6: Final answer
    x = 11,570.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.