Home / 2,148.40-2,964.74-1,216.90

Finding the Fourth Proportional to 2,148.40, 2,964.74 and 1,216.90

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Solution

The fourth proportional to 2,148.40, 2,964.74 and 1,216.90 is: 1,679.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.40 : 2,964.74 = 1,216.90 : x
  2. Step 2: Convert to fraction form
    2,148.40/2,964.74 = 1,216.90/x
  3. Step 3: Cross multiply
    2,148.40x = 2,964.74 × 1,216.90
  4. Step 4: Simplify right side
    2,148.40x = 3,607,792.11
  5. Step 5: Solve for x
    x = 3,607,792.11/2,148.40
  6. Step 6: Final answer
    x = 1,679.29

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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.