Home / 1,634.80-2,256.12-926.70

Finding the Fourth Proportional to 1,634.80, 2,256.12 and 926.70

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Solution

The fourth proportional to 1,634.80, 2,256.12 and 926.70 is: 1,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634.80 : 2,256.12 = 926.70 : x
  2. Step 2: Convert to fraction form
    1,634.80/2,256.12 = 926.70/x
  3. Step 3: Cross multiply
    1,634.80x = 2,256.12 × 926.70
  4. Step 4: Simplify right side
    1,634.80x = 2,090,746.40
  5. Step 5: Solve for x
    x = 2,090,746.40/1,634.80
  6. Step 6: Final answer
    x = 1,278.90

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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.