Home / 8,706.91-12,015.36-5,122.25

Finding the Fourth Proportional to 8,706.91, 12,015.36 and 5,122.25

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Solution

The fourth proportional to 8,706.91, 12,015.36 and 5,122.25 is: 7,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.91 : 12,015.36 = 5,122.25 : x
  2. Step 2: Convert to fraction form
    8,706.91/12,015.36 = 5,122.25/x
  3. Step 3: Cross multiply
    8,706.91x = 12,015.36 × 5,122.25
  4. Step 4: Simplify right side
    8,706.91x = 61,545,677.76
  5. Step 5: Solve for x
    x = 61,545,677.76/8,706.91
  6. Step 6: Final answer
    x = 7,068.60

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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.