Home / 1,536.20-2,119.77-906.68

Finding the Fourth Proportional to 1,536.20, 2,119.77 and 906.68

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Solution

The fourth proportional to 1,536.20, 2,119.77 and 906.68 is: 1,251.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,536.20 : 2,119.77 = 906.68 : x
  2. Step 2: Convert to fraction form
    1,536.20/2,119.77 = 906.68/x
  3. Step 3: Cross multiply
    1,536.20x = 2,119.77 × 906.68
  4. Step 4: Simplify right side
    1,536.20x = 1,921,953.06
  5. Step 5: Solve for x
    x = 1,921,953.06/1,536.20
  6. Step 6: Final answer
    x = 1,251.11

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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.