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Finding the Fourth Proportional to 2,715.51, 4,080.10 and 1,728.77

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Solution

The fourth proportional to 2,715.51, 4,080.10 and 1,728.77 is: 2,597.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.51 : 4,080.10 = 1,728.77 : x
  2. Step 2: Convert to fraction form
    2,715.51/4,080.10 = 1,728.77/x
  3. Step 3: Cross multiply
    2,715.51x = 4,080.10 × 1,728.77
  4. Step 4: Simplify right side
    2,715.51x = 7,053,560.36
  5. Step 5: Solve for x
    x = 7,053,560.36/2,715.51
  6. Step 6: Final answer
    x = 2,597.51

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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.