Home / 2,116.90-2,920.36-1,232.18

Finding the Fourth Proportional to 2,116.90, 2,920.36 and 1,232.18

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Solution

The fourth proportional to 2,116.90, 2,920.36 and 1,232.18 is: 1,699.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.90 : 2,920.36 = 1,232.18 : x
  2. Step 2: Convert to fraction form
    2,116.90/2,920.36 = 1,232.18/x
  3. Step 3: Cross multiply
    2,116.90x = 2,920.36 × 1,232.18
  4. Step 4: Simplify right side
    2,116.90x = 3,598,409.18
  5. Step 5: Solve for x
    x = 3,598,409.18/2,116.90
  6. Step 6: Final answer
    x = 1,699.85

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1.5x scale

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.