Home / 5,140.20-7,717.59-4,905.30

Finding the Fourth Proportional to 5,140.20, 7,717.59 and 4,905.30

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Solution

The fourth proportional to 5,140.20, 7,717.59 and 4,905.30 is: 7,364.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,140.20 : 7,717.59 = 4,905.30 : x
  2. Step 2: Convert to fraction form
    5,140.20/7,717.59 = 4,905.30/x
  3. Step 3: Cross multiply
    5,140.20x = 7,717.59 × 4,905.30
  4. Step 4: Simplify right side
    5,140.20x = 37,857,094.23
  5. Step 5: Solve for x
    x = 37,857,094.23/5,140.20
  6. Step 6: Final answer
    x = 7,364.91

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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.