Home / 3,760.08-5,639.56-986.80

Finding the Fourth Proportional to 3,760.08, 5,639.56 and 986.80

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Solution

The fourth proportional to 3,760.08, 5,639.56 and 986.80 is: 1,480.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,760.08 : 5,639.56 = 986.80 : x
  2. Step 2: Convert to fraction form
    3,760.08/5,639.56 = 986.80/x
  3. Step 3: Cross multiply
    3,760.08x = 5,639.56 × 986.80
  4. Step 4: Simplify right side
    3,760.08x = 5,565,117.81
  5. Step 5: Solve for x
    x = 5,565,117.81/3,760.08
  6. Step 6: Final answer
    x = 1,480.05

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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.