Home / 5,428.60-8,121.30-4,706.20

Finding the Fourth Proportional to 5,428.60, 8,121.30 and 4,706.20

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Solution

The fourth proportional to 5,428.60, 8,121.30 and 4,706.20 is: 7,040.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.60 : 8,121.30 = 4,706.20 : x
  2. Step 2: Convert to fraction form
    5,428.60/8,121.30 = 4,706.20/x
  3. Step 3: Cross multiply
    5,428.60x = 8,121.30 × 4,706.20
  4. Step 4: Simplify right side
    5,428.60x = 38,220,462.06
  5. Step 5: Solve for x
    x = 38,220,462.06/5,428.60
  6. Step 6: Final answer
    x = 7,040.57

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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.