Home / 2,919.66-4,381.46-1,275.26

Finding the Fourth Proportional to 2,919.66, 4,381.46 and 1,275.26

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Solution

The fourth proportional to 2,919.66, 4,381.46 and 1,275.26 is: 1,913.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.66 : 4,381.46 = 1,275.26 : x
  2. Step 2: Convert to fraction form
    2,919.66/4,381.46 = 1,275.26/x
  3. Step 3: Cross multiply
    2,919.66x = 4,381.46 × 1,275.26
  4. Step 4: Simplify right side
    2,919.66x = 5,587,477.18
  5. Step 5: Solve for x
    x = 5,587,477.18/2,919.66
  6. Step 6: Final answer
    x = 1,913.74

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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.