Home / 5,240.15-7,847.09-3,130.48

Finding the Fourth Proportional to 5,240.15, 7,847.09 and 3,130.48

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Solution

The fourth proportional to 5,240.15, 7,847.09 and 3,130.48 is: 4,687.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.15 : 7,847.09 = 3,130.48 : x
  2. Step 2: Convert to fraction form
    5,240.15/7,847.09 = 3,130.48/x
  3. Step 3: Cross multiply
    5,240.15x = 7,847.09 × 3,130.48
  4. Step 4: Simplify right side
    5,240.15x = 24,565,150.83
  5. Step 5: Solve for x
    x = 24,565,150.83/5,240.15
  6. Step 6: Final answer
    x = 4,687.87

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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.