Home / 2,101.52-2,900.30-1,217.54

Finding the Fourth Proportional to 2,101.52, 2,900.30 and 1,217.54

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Solution

The fourth proportional to 2,101.52, 2,900.30 and 1,217.54 is: 1,680.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.52 : 2,900.30 = 1,217.54 : x
  2. Step 2: Convert to fraction form
    2,101.52/2,900.30 = 1,217.54/x
  3. Step 3: Cross multiply
    2,101.52x = 2,900.30 × 1,217.54
  4. Step 4: Simplify right side
    2,101.52x = 3,531,210.67
  5. Step 5: Solve for x
    x = 3,531,210.67/2,101.52
  6. Step 6: Final answer
    x = 1,680.32

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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.