Home / 1,934.78-2,669.36-1,685.68

Finding the Fourth Proportional to 1,934.78, 2,669.36 and 1,685.68

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Solution

The fourth proportional to 1,934.78, 2,669.36 and 1,685.68 is: 2,325.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,934.78 : 2,669.36 = 1,685.68 : x
  2. Step 2: Convert to fraction form
    1,934.78/2,669.36 = 1,685.68/x
  3. Step 3: Cross multiply
    1,934.78x = 2,669.36 × 1,685.68
  4. Step 4: Simplify right side
    1,934.78x = 4,499,671.66
  5. Step 5: Solve for x
    x = 4,499,671.66/1,934.78
  6. Step 6: Final answer
    x = 2,325.68

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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.