Home / 8,621.40-12,933.90-4,920.60

Finding the Fourth Proportional to 8,621.40, 12,933.90 and 4,920.60

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Solution

The fourth proportional to 8,621.40, 12,933.90 and 4,920.60 is: 7,381.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.40 : 12,933.90 = 4,920.60 : x
  2. Step 2: Convert to fraction form
    8,621.40/12,933.90 = 4,920.60/x
  3. Step 3: Cross multiply
    8,621.40x = 12,933.90 × 4,920.60
  4. Step 4: Simplify right side
    8,621.40x = 63,642,548.34
  5. Step 5: Solve for x
    x = 63,642,548.34/8,621.40
  6. Step 6: Final answer
    x = 7,381.93

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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.