Home / 2,913.40-4,370.10-2,081.80

Finding the Fourth Proportional to 2,913.40, 4,370.10 and 2,081.80

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Solution

The fourth proportional to 2,913.40, 4,370.10 and 2,081.80 is: 3,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.40 : 4,370.10 = 2,081.80 : x
  2. Step 2: Convert to fraction form
    2,913.40/4,370.10 = 2,081.80/x
  3. Step 3: Cross multiply
    2,913.40x = 4,370.10 × 2,081.80
  4. Step 4: Simplify right side
    2,913.40x = 9,097,674.18
  5. Step 5: Solve for x
    x = 9,097,674.18/2,913.40
  6. Step 6: Final answer
    x = 3,122.70

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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.