Home / 5,772.37-7,954.10-3,980.40

Finding the Fourth Proportional to 5,772.37, 7,954.10 and 3,980.40

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Solution

The fourth proportional to 5,772.37, 7,954.10 and 3,980.40 is: 5,484.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,772.37 : 7,954.10 = 3,980.40 : x
  2. Step 2: Convert to fraction form
    5,772.37/7,954.10 = 3,980.40/x
  3. Step 3: Cross multiply
    5,772.37x = 7,954.10 × 3,980.40
  4. Step 4: Simplify right side
    5,772.37x = 31,660,483.02
  5. Step 5: Solve for x
    x = 31,660,483.02/5,772.37
  6. Step 6: Final answer
    x = 5,484.83

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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.