Home / 2,107.68-3,160.68-1,011.28

Finding the Fourth Proportional to 2,107.68, 3,160.68 and 1,011.28

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Solution

The fourth proportional to 2,107.68, 3,160.68 and 1,011.28 is: 1,516.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.68 : 3,160.68 = 1,011.28 : x
  2. Step 2: Convert to fraction form
    2,107.68/3,160.68 = 1,011.28/x
  3. Step 3: Cross multiply
    2,107.68x = 3,160.68 × 1,011.28
  4. Step 4: Simplify right side
    2,107.68x = 3,196,332.47
  5. Step 5: Solve for x
    x = 3,196,332.47/2,107.68
  6. Step 6: Final answer
    x = 1,516.52

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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.