Home / 5,220.23-7,829.80-4,915.67

Finding the Fourth Proportional to 5,220.23, 7,829.80 and 4,915.67

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Solution

The fourth proportional to 5,220.23, 7,829.80 and 4,915.67 is: 7,372.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.23 : 7,829.80 = 4,915.67 : x
  2. Step 2: Convert to fraction form
    5,220.23/7,829.80 = 4,915.67/x
  3. Step 3: Cross multiply
    5,220.23x = 7,829.80 × 4,915.67
  4. Step 4: Simplify right side
    5,220.23x = 38,488,661.53
  5. Step 5: Solve for x
    x = 38,488,661.53/5,220.23
  6. Step 6: Final answer
    x = 7,372.99

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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.