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Finding the Fourth Proportional to 7,068.74, 9,726.08 and 6,485.54

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Solution

The fourth proportional to 7,068.74, 9,726.08 and 6,485.54 is: 8,923.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,068.74 : 9,726.08 = 6,485.54 : x
  2. Step 2: Convert to fraction form
    7,068.74/9,726.08 = 6,485.54/x
  3. Step 3: Cross multiply
    7,068.74x = 9,726.08 × 6,485.54
  4. Step 4: Simplify right side
    7,068.74x = 63,078,799.83
  5. Step 5: Solve for x
    x = 63,078,799.83/7,068.74
  6. Step 6: Final answer
    x = 8,923.63

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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.