Home / 5,040.40-7,555.20-1,919.20

Finding the Fourth Proportional to 5,040.40, 7,555.20 and 1,919.20

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Solution

The fourth proportional to 5,040.40, 7,555.20 and 1,919.20 is: 2,876.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,040.40 : 7,555.20 = 1,919.20 : x
  2. Step 2: Convert to fraction form
    5,040.40/7,555.20 = 1,919.20/x
  3. Step 3: Cross multiply
    5,040.40x = 7,555.20 × 1,919.20
  4. Step 4: Simplify right side
    5,040.40x = 14,499,939.84
  5. Step 5: Solve for x
    x = 14,499,939.84/5,040.40
  6. Step 6: Final answer
    x = 2,876.74

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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.