Home / 5,115.27-7,672.64-1,417.62

Finding the Fourth Proportional to 5,115.27, 7,672.64 and 1,417.62

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Solution

The fourth proportional to 5,115.27, 7,672.64 and 1,417.62 is: 2,126.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.27 : 7,672.64 = 1,417.62 : x
  2. Step 2: Convert to fraction form
    5,115.27/7,672.64 = 1,417.62/x
  3. Step 3: Cross multiply
    5,115.27x = 7,672.64 × 1,417.62
  4. Step 4: Simplify right side
    5,115.27x = 10,876,880.83
  5. Step 5: Solve for x
    x = 10,876,880.83/5,115.27
  6. Step 6: Final answer
    x = 2,126.36

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1.5x scale

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.