Home / 3,140.99-4,335.34-1,815.47

Finding the Fourth Proportional to 3,140.99, 4,335.34 and 1,815.47

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Solution

The fourth proportional to 3,140.99, 4,335.34 and 1,815.47 is: 2,505.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.99 : 4,335.34 = 1,815.47 : x
  2. Step 2: Convert to fraction form
    3,140.99/4,335.34 = 1,815.47/x
  3. Step 3: Cross multiply
    3,140.99x = 4,335.34 × 1,815.47
  4. Step 4: Simplify right side
    3,140.99x = 7,870,679.71
  5. Step 5: Solve for x
    x = 7,870,679.71/3,140.99
  6. Step 6: Final answer
    x = 2,505.80

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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.