Home / 2,745.50-4,117.14-990.18

Finding the Fourth Proportional to 2,745.50, 4,117.14 and 990.18

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Solution

The fourth proportional to 2,745.50, 4,117.14 and 990.18 is: 1,484.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,745.50 : 4,117.14 = 990.18 : x
  2. Step 2: Convert to fraction form
    2,745.50/4,117.14 = 990.18/x
  3. Step 3: Cross multiply
    2,745.50x = 4,117.14 × 990.18
  4. Step 4: Simplify right side
    2,745.50x = 4,076,709.69
  5. Step 5: Solve for x
    x = 4,076,709.69/2,745.50
  6. Step 6: Final answer
    x = 1,484.87

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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.