Home / 8,419.88-12,638.63-3,492.45

Finding the Fourth Proportional to 8,419.88, 12,638.63 and 3,492.45

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Solution

The fourth proportional to 8,419.88, 12,638.63 and 3,492.45 is: 5,242.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.88 : 12,638.63 = 3,492.45 : x
  2. Step 2: Convert to fraction form
    8,419.88/12,638.63 = 3,492.45/x
  3. Step 3: Cross multiply
    8,419.88x = 12,638.63 × 3,492.45
  4. Step 4: Simplify right side
    8,419.88x = 44,139,702.69
  5. Step 5: Solve for x
    x = 44,139,702.69/8,419.88
  6. Step 6: Final answer
    x = 5,242.32

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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.