Home / 1,590.11-2,194.15-926.80

Finding the Fourth Proportional to 1,590.11, 2,194.15 and 926.80

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Solution

The fourth proportional to 1,590.11, 2,194.15 and 926.80 is: 1,278.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.11 : 2,194.15 = 926.80 : x
  2. Step 2: Convert to fraction form
    1,590.11/2,194.15 = 926.80/x
  3. Step 3: Cross multiply
    1,590.11x = 2,194.15 × 926.80
  4. Step 4: Simplify right side
    1,590.11x = 2,033,533.89
  5. Step 5: Solve for x
    x = 2,033,533.89/1,590.11
  6. Step 6: Final answer
    x = 1,278.86

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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.