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Finding the Fourth Proportional to 9,172.65, 12,658.05 and 5,395.08

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Solution

The fourth proportional to 9,172.65, 12,658.05 and 5,395.08 is: 7,445.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,172.65 : 12,658.05 = 5,395.08 : x
  2. Step 2: Convert to fraction form
    9,172.65/12,658.05 = 5,395.08/x
  3. Step 3: Cross multiply
    9,172.65x = 12,658.05 × 5,395.08
  4. Step 4: Simplify right side
    9,172.65x = 68,291,192.39
  5. Step 5: Solve for x
    x = 68,291,192.39/9,172.65
  6. Step 6: Final answer
    x = 7,445.09

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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.