Home / 5,039.78-7,555.64-1,919.16

Finding the Fourth Proportional to 5,039.78, 7,555.64 and 1,919.16

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Solution

The fourth proportional to 5,039.78, 7,555.64 and 1,919.16 is: 2,877.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,039.78 : 7,555.64 = 1,919.16 : x
  2. Step 2: Convert to fraction form
    5,039.78/7,555.64 = 1,919.16/x
  3. Step 3: Cross multiply
    5,039.78x = 7,555.64 × 1,919.16
  4. Step 4: Simplify right side
    5,039.78x = 14,500,472.47
  5. Step 5: Solve for x
    x = 14,500,472.47/5,039.78
  6. Step 6: Final answer
    x = 2,877.21

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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.