Home / 5,130.55-7,080.17-2,772.70

Finding the Fourth Proportional to 5,130.55, 7,080.17 and 2,772.70

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Solution

The fourth proportional to 5,130.55, 7,080.17 and 2,772.70 is: 3,826.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.55 : 7,080.17 = 2,772.70 : x
  2. Step 2: Convert to fraction form
    5,130.55/7,080.17 = 2,772.70/x
  3. Step 3: Cross multiply
    5,130.55x = 7,080.17 × 2,772.70
  4. Step 4: Simplify right side
    5,130.55x = 19,631,187.36
  5. Step 5: Solve for x
    x = 19,631,187.36/5,130.55
  6. Step 6: Final answer
    x = 3,826.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.