Home / 1,614.60-2,417.85-1,290.60

Finding the Fourth Proportional to 1,614.60, 2,417.85 and 1,290.60

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Solution

The fourth proportional to 1,614.60, 2,417.85 and 1,290.60 is: 1,932.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,614.60 : 2,417.85 = 1,290.60 : x
  2. Step 2: Convert to fraction form
    1,614.60/2,417.85 = 1,290.60/x
  3. Step 3: Cross multiply
    1,614.60x = 2,417.85 × 1,290.60
  4. Step 4: Simplify right side
    1,614.60x = 3,120,477.21
  5. Step 5: Solve for x
    x = 3,120,477.21/1,614.60
  6. Step 6: Final answer
    x = 1,932.66

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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.