Home / 2,160.25-2,981.10-1,203.15

Finding the Fourth Proportional to 2,160.25, 2,981.10 and 1,203.15

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Solution

The fourth proportional to 2,160.25, 2,981.10 and 1,203.15 is: 1,660.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.25 : 2,981.10 = 1,203.15 : x
  2. Step 2: Convert to fraction form
    2,160.25/2,981.10 = 1,203.15/x
  3. Step 3: Cross multiply
    2,160.25x = 2,981.10 × 1,203.15
  4. Step 4: Simplify right side
    2,160.25x = 3,586,714.76
  5. Step 5: Solve for x
    x = 3,586,714.76/2,160.25
  6. Step 6: Final answer
    x = 1,660.32

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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.