Home / 3,123.39-4,310.31-1,707.12

Finding the Fourth Proportional to 3,123.39, 4,310.31 and 1,707.12

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Solution

The fourth proportional to 3,123.39, 4,310.31 and 1,707.12 is: 2,355.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.39 : 4,310.31 = 1,707.12 : x
  2. Step 2: Convert to fraction form
    3,123.39/4,310.31 = 1,707.12/x
  3. Step 3: Cross multiply
    3,123.39x = 4,310.31 × 1,707.12
  4. Step 4: Simplify right side
    3,123.39x = 7,358,216.41
  5. Step 5: Solve for x
    x = 7,358,216.41/3,123.39
  6. Step 6: Final answer
    x = 2,355.84

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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.