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Finding the Fourth Proportional to 3,560.54, 5,340.80 and 1,980.26

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Solution

The fourth proportional to 3,560.54, 5,340.80 and 1,980.26 is: 2,970.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,560.54 : 5,340.80 = 1,980.26 : x
  2. Step 2: Convert to fraction form
    3,560.54/5,340.80 = 1,980.26/x
  3. Step 3: Cross multiply
    3,560.54x = 5,340.80 × 1,980.26
  4. Step 4: Simplify right side
    3,560.54x = 10,576,172.61
  5. Step 5: Solve for x
    x = 10,576,172.61/3,560.54
  6. Step 6: Final answer
    x = 2,970.38

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1.5x scale

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.