Home / 8,706.53-12,015.26-5,121.75

Finding the Fourth Proportional to 8,706.53, 12,015.26 and 5,121.75

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Solution

The fourth proportional to 8,706.53, 12,015.26 and 5,121.75 is: 7,068.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.53 : 12,015.26 = 5,121.75 : x
  2. Step 2: Convert to fraction form
    8,706.53/12,015.26 = 5,121.75/x
  3. Step 3: Cross multiply
    8,706.53x = 12,015.26 × 5,121.75
  4. Step 4: Simplify right side
    8,706.53x = 61,539,132.30
  5. Step 5: Solve for x
    x = 61,539,132.30/8,706.53
  6. Step 6: Final answer
    x = 7,068.16

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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.