Home / 2,123.68-2,934.48-1,661.44

Finding the Fourth Proportional to 2,123.68, 2,934.48 and 1,661.44

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Solution

The fourth proportional to 2,123.68, 2,934.48 and 1,661.44 is: 2,295.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123.68 : 2,934.48 = 1,661.44 : x
  2. Step 2: Convert to fraction form
    2,123.68/2,934.48 = 1,661.44/x
  3. Step 3: Cross multiply
    2,123.68x = 2,934.48 × 1,661.44
  4. Step 4: Simplify right side
    2,123.68x = 4,875,462.45
  5. Step 5: Solve for x
    x = 4,875,462.45/2,123.68
  6. Step 6: Final answer
    x = 2,295.76

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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.