Home / 5,285.60-7,290.81-3,399.63

Finding the Fourth Proportional to 5,285.60, 7,290.81 and 3,399.63

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Solution

The fourth proportional to 5,285.60, 7,290.81 and 3,399.63 is: 4,689.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.60 : 7,290.81 = 3,399.63 : x
  2. Step 2: Convert to fraction form
    5,285.60/7,290.81 = 3,399.63/x
  3. Step 3: Cross multiply
    5,285.60x = 7,290.81 × 3,399.63
  4. Step 4: Simplify right side
    5,285.60x = 24,786,056.40
  5. Step 5: Solve for x
    x = 24,786,056.40/5,285.60
  6. Step 6: Final answer
    x = 4,689.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.