Home / 9,247.72-12,763.38-8,685.40

Finding the Fourth Proportional to 9,247.72, 12,763.38 and 8,685.40

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Solution

The fourth proportional to 9,247.72, 12,763.38 and 8,685.40 is: 11,987.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,247.72 : 12,763.38 = 8,685.40 : x
  2. Step 2: Convert to fraction form
    9,247.72/12,763.38 = 8,685.40/x
  3. Step 3: Cross multiply
    9,247.72x = 12,763.38 × 8,685.40
  4. Step 4: Simplify right side
    9,247.72x = 110,855,060.65
  5. Step 5: Solve for x
    x = 110,855,060.65/9,247.72
  6. Step 6: Final answer
    x = 11,987.29

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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.