Home / 3,089.28-4,640.32-2,985.60

Finding the Fourth Proportional to 3,089.28, 4,640.32 and 2,985.60

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Solution

The fourth proportional to 3,089.28, 4,640.32 and 2,985.60 is: 4,484.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,089.28 : 4,640.32 = 2,985.60 : x
  2. Step 2: Convert to fraction form
    3,089.28/4,640.32 = 2,985.60/x
  3. Step 3: Cross multiply
    3,089.28x = 4,640.32 × 2,985.60
  4. Step 4: Simplify right side
    3,089.28x = 13,854,139.39
  5. Step 5: Solve for x
    x = 13,854,139.39/3,089.28
  6. Step 6: Final answer
    x = 4,484.59

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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.