Home / 8,686.08-13,012.74-5,168.70

Finding the Fourth Proportional to 8,686.08, 13,012.74 and 5,168.70

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Solution

The fourth proportional to 8,686.08, 13,012.74 and 5,168.70 is: 7,743.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.08 : 13,012.74 = 5,168.70 : x
  2. Step 2: Convert to fraction form
    8,686.08/13,012.74 = 5,168.70/x
  3. Step 3: Cross multiply
    8,686.08x = 13,012.74 × 5,168.70
  4. Step 4: Simplify right side
    8,686.08x = 67,258,949.24
  5. Step 5: Solve for x
    x = 67,258,949.24/8,686.08
  6. Step 6: Final answer
    x = 7,743.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.