Home / 2,123-2,928.47-1,335.68

Finding the Fourth Proportional to 2,123, 2,928.47 and 1,335.68

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Solution

The fourth proportional to 2,123, 2,928.47 and 1,335.68 is: 1,842.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123 : 2,928.47 = 1,335.68 : x
  2. Step 2: Convert to fraction form
    2,123/2,928.47 = 1,335.68/x
  3. Step 3: Cross multiply
    2,123x = 2,928.47 × 1,335.68
  4. Step 4: Simplify right side
    2,123x = 3,911,498.81
  5. Step 5: Solve for x
    x = 3,911,498.81/2,123
  6. Step 6: Final answer
    x = 1,842.44

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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.