Home / 3,165.32-4,746-1,215.20

Finding the Fourth Proportional to 3,165.32, 4,746 and 1,215.20

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Solution

The fourth proportional to 3,165.32, 4,746 and 1,215.20 is: 1,822.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.32 : 4,746 = 1,215.20 : x
  2. Step 2: Convert to fraction form
    3,165.32/4,746 = 1,215.20/x
  3. Step 3: Cross multiply
    3,165.32x = 4,746 × 1,215.20
  4. Step 4: Simplify right side
    3,165.32x = 5,767,339.20
  5. Step 5: Solve for x
    x = 5,767,339.20/3,165.32
  6. Step 6: Final answer
    x = 1,822.04

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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.