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Finding the Fourth Proportional to 8,975.67, 12,386.22 and 5,199.51

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Solution

The fourth proportional to 8,975.67, 12,386.22 and 5,199.51 is: 7,175.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,975.67 : 12,386.22 = 5,199.51 : x
  2. Step 2: Convert to fraction form
    8,975.67/12,386.22 = 5,199.51/x
  3. Step 3: Cross multiply
    8,975.67x = 12,386.22 × 5,199.51
  4. Step 4: Simplify right side
    8,975.67x = 64,402,274.75
  5. Step 5: Solve for x
    x = 64,402,274.75/8,975.67
  6. Step 6: Final answer
    x = 7,175.21

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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.