Home / 5,130.90-7,682.46-2,660.52

Finding the Fourth Proportional to 5,130.90, 7,682.46 and 2,660.52

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Solution

The fourth proportional to 5,130.90, 7,682.46 and 2,660.52 is: 3,983.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.90 : 7,682.46 = 2,660.52 : x
  2. Step 2: Convert to fraction form
    5,130.90/7,682.46 = 2,660.52/x
  3. Step 3: Cross multiply
    5,130.90x = 7,682.46 × 2,660.52
  4. Step 4: Simplify right side
    5,130.90x = 20,439,338.48
  5. Step 5: Solve for x
    x = 20,439,338.48/5,130.90
  6. Step 6: Final answer
    x = 3,983.58

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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.