Home / 1,815.26-2,506.01-1,421.60

Finding the Fourth Proportional to 1,815.26, 2,506.01 and 1,421.60

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Solution

The fourth proportional to 1,815.26, 2,506.01 and 1,421.60 is: 1,962.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.26 : 2,506.01 = 1,421.60 : x
  2. Step 2: Convert to fraction form
    1,815.26/2,506.01 = 1,421.60/x
  3. Step 3: Cross multiply
    1,815.26x = 2,506.01 × 1,421.60
  4. Step 4: Simplify right side
    1,815.26x = 3,562,524.18
  5. Step 5: Solve for x
    x = 3,562,524.18/1,815.26
  6. Step 6: Final answer
    x = 1,962.55

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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.