Home / 4,214.40-6,309.12-3,123.60

Finding the Fourth Proportional to 4,214.40, 6,309.12 and 3,123.60

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Solution

The fourth proportional to 4,214.40, 6,309.12 and 3,123.60 is: 4,676.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,214.40 : 6,309.12 = 3,123.60 : x
  2. Step 2: Convert to fraction form
    4,214.40/6,309.12 = 3,123.60/x
  3. Step 3: Cross multiply
    4,214.40x = 6,309.12 × 3,123.60
  4. Step 4: Simplify right side
    4,214.40x = 19,707,167.23
  5. Step 5: Solve for x
    x = 19,707,167.23/4,214.40
  6. Step 6: Final answer
    x = 4,676.15

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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.