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Finding the Fourth Proportional to 8,966.65, 12,373.75 and 5,189.29

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Solution

The fourth proportional to 8,966.65, 12,373.75 and 5,189.29 is: 7,161.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,966.65 : 12,373.75 = 5,189.29 : x
  2. Step 2: Convert to fraction form
    8,966.65/12,373.75 = 5,189.29/x
  3. Step 3: Cross multiply
    8,966.65x = 12,373.75 × 5,189.29
  4. Step 4: Simplify right side
    8,966.65x = 64,210,977.14
  5. Step 5: Solve for x
    x = 64,210,977.14/8,966.65
  6. Step 6: Final answer
    x = 7,161.09

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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.