Home / 2,160.52-2,981.22-1,216.36

Finding the Fourth Proportional to 2,160.52, 2,981.22 and 1,216.36

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Solution

The fourth proportional to 2,160.52, 2,981.22 and 1,216.36 is: 1,678.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.52 : 2,981.22 = 1,216.36 : x
  2. Step 2: Convert to fraction form
    2,160.52/2,981.22 = 1,216.36/x
  3. Step 3: Cross multiply
    2,160.52x = 2,981.22 × 1,216.36
  4. Step 4: Simplify right side
    2,160.52x = 3,626,236.76
  5. Step 5: Solve for x
    x = 3,626,236.76/2,160.52
  6. Step 6: Final answer
    x = 1,678.41

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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.