Home / 5,123.21-7,684.78-1,613.51

Finding the Fourth Proportional to 5,123.21, 7,684.78 and 1,613.51

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Solution

The fourth proportional to 5,123.21, 7,684.78 and 1,613.51 is: 2,420.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.21 : 7,684.78 = 1,613.51 : x
  2. Step 2: Convert to fraction form
    5,123.21/7,684.78 = 1,613.51/x
  3. Step 3: Cross multiply
    5,123.21x = 7,684.78 × 1,613.51
  4. Step 4: Simplify right side
    5,123.21x = 12,399,473.41
  5. Step 5: Solve for x
    x = 12,399,473.41/5,123.21
  6. Step 6: Final answer
    x = 2,420.26

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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.