Home / 8,419.33-12,615.08-5,122.45

Finding the Fourth Proportional to 8,419.33, 12,615.08 and 5,122.45

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Solution

The fourth proportional to 8,419.33, 12,615.08 and 5,122.45 is: 7,675.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.33 : 12,615.08 = 5,122.45 : x
  2. Step 2: Convert to fraction form
    8,419.33/12,615.08 = 5,122.45/x
  3. Step 3: Cross multiply
    8,419.33x = 12,615.08 × 5,122.45
  4. Step 4: Simplify right side
    8,419.33x = 64,620,053.47
  5. Step 5: Solve for x
    x = 64,620,053.47/8,419.33
  6. Step 6: Final answer
    x = 7,675.21

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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.