Home / 3,990.61-5,988.39-1,525.68

Finding the Fourth Proportional to 3,990.61, 5,988.39 and 1,525.68

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Solution

The fourth proportional to 3,990.61, 5,988.39 and 1,525.68 is: 2,289.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.61 : 5,988.39 = 1,525.68 : x
  2. Step 2: Convert to fraction form
    3,990.61/5,988.39 = 1,525.68/x
  3. Step 3: Cross multiply
    3,990.61x = 5,988.39 × 1,525.68
  4. Step 4: Simplify right side
    3,990.61x = 9,136,366.86
  5. Step 5: Solve for x
    x = 9,136,366.86/3,990.61
  6. Step 6: Final answer
    x = 2,289.47

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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.