Home / 1,815.71-2,505.61-1,029.91

Finding the Fourth Proportional to 1,815.71, 2,505.61 and 1,029.91

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Solution

The fourth proportional to 1,815.71, 2,505.61 and 1,029.91 is: 1,421.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.71 : 2,505.61 = 1,029.91 : x
  2. Step 2: Convert to fraction form
    1,815.71/2,505.61 = 1,029.91/x
  3. Step 3: Cross multiply
    1,815.71x = 2,505.61 × 1,029.91
  4. Step 4: Simplify right side
    1,815.71x = 2,580,543.96
  5. Step 5: Solve for x
    x = 2,580,543.96/1,815.71
  6. Step 6: Final answer
    x = 1,421.23

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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.