Home / 2,102.34-2,900.76-1,218.12

Finding the Fourth Proportional to 2,102.34, 2,900.76 and 1,218.12

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Solution

The fourth proportional to 2,102.34, 2,900.76 and 1,218.12 is: 1,680.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.34 : 2,900.76 = 1,218.12 : x
  2. Step 2: Convert to fraction form
    2,102.34/2,900.76 = 1,218.12/x
  3. Step 3: Cross multiply
    2,102.34x = 2,900.76 × 1,218.12
  4. Step 4: Simplify right side
    2,102.34x = 3,533,473.77
  5. Step 5: Solve for x
    x = 3,533,473.77/2,102.34
  6. Step 6: Final answer
    x = 1,680.73

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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.