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Finding the Fourth Proportional to 9,357.55, 12,917.64 and 6,172.74

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Solution

The fourth proportional to 9,357.55, 12,917.64 and 6,172.74 is: 8,521.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,357.55 : 12,917.64 = 6,172.74 : x
  2. Step 2: Convert to fraction form
    9,357.55/12,917.64 = 6,172.74/x
  3. Step 3: Cross multiply
    9,357.55x = 12,917.64 × 6,172.74
  4. Step 4: Simplify right side
    9,357.55x = 79,737,233.13
  5. Step 5: Solve for x
    x = 79,737,233.13/9,357.55
  6. Step 6: Final answer
    x = 8,521.17

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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.