Home / 4,762.13-7,140.47-2,815.70

Finding the Fourth Proportional to 4,762.13, 7,140.47 and 2,815.70

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Solution

The fourth proportional to 4,762.13, 7,140.47 and 2,815.70 is: 4,221.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,762.13 : 7,140.47 = 2,815.70 : x
  2. Step 2: Convert to fraction form
    4,762.13/7,140.47 = 2,815.70/x
  3. Step 3: Cross multiply
    4,762.13x = 7,140.47 × 2,815.70
  4. Step 4: Simplify right side
    4,762.13x = 20,105,425.15
  5. Step 5: Solve for x
    x = 20,105,425.15/4,762.13
  6. Step 6: Final answer
    x = 4,221.94

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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.