Home / 2,864.70-4,293.81-1,220.40

Finding the Fourth Proportional to 2,864.70, 4,293.81 and 1,220.40

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Solution

The fourth proportional to 2,864.70, 4,293.81 and 1,220.40 is: 1,829.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,864.70 : 4,293.81 = 1,220.40 : x
  2. Step 2: Convert to fraction form
    2,864.70/4,293.81 = 1,220.40/x
  3. Step 3: Cross multiply
    2,864.70x = 4,293.81 × 1,220.40
  4. Step 4: Simplify right side
    2,864.70x = 5,240,165.72
  5. Step 5: Solve for x
    x = 5,240,165.72/2,864.70
  6. Step 6: Final answer
    x = 1,829.22

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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.