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Finding the Fourth Proportional to 8,940.51, 12,335.93 and 5,403.65

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Solution

The fourth proportional to 8,940.51, 12,335.93 and 5,403.65 is: 7,455.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.51 : 12,335.93 = 5,403.65 : x
  2. Step 2: Convert to fraction form
    8,940.51/12,335.93 = 5,403.65/x
  3. Step 3: Cross multiply
    8,940.51x = 12,335.93 × 5,403.65
  4. Step 4: Simplify right side
    8,940.51x = 66,658,979.71
  5. Step 5: Solve for x
    x = 66,658,979.71/8,940.51
  6. Step 6: Final answer
    x = 7,455.84

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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.