Home / 4,212.81-5,813.40-2,420.28

Finding the Fourth Proportional to 4,212.81, 5,813.40 and 2,420.28

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Solution

The fourth proportional to 4,212.81, 5,813.40 and 2,420.28 is: 3,339.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.81 : 5,813.40 = 2,420.28 : x
  2. Step 2: Convert to fraction form
    4,212.81/5,813.40 = 2,420.28/x
  3. Step 3: Cross multiply
    4,212.81x = 5,813.40 × 2,420.28
  4. Step 4: Simplify right side
    4,212.81x = 14,070,055.75
  5. Step 5: Solve for x
    x = 14,070,055.75/4,212.81
  6. Step 6: Final answer
    x = 3,339.83

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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.