Home / 2,715-3,746.64-1,535.88

Finding the Fourth Proportional to 2,715, 3,746.64 and 1,535.88

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Solution

The fourth proportional to 2,715, 3,746.64 and 1,535.88 is: 2,119.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715 : 3,746.64 = 1,535.88 : x
  2. Step 2: Convert to fraction form
    2,715/3,746.64 = 1,535.88/x
  3. Step 3: Cross multiply
    2,715x = 3,746.64 × 1,535.88
  4. Step 4: Simplify right side
    2,715x = 5,754,389.44
  5. Step 5: Solve for x
    x = 5,754,389.44/2,715
  6. Step 6: Final answer
    x = 2,119.48

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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.