Home / 1,458.30-2,011.82-926.90

Finding the Fourth Proportional to 1,458.30, 2,011.82 and 926.90

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Solution

The fourth proportional to 1,458.30, 2,011.82 and 926.90 is: 1,278.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.30 : 2,011.82 = 926.90 : x
  2. Step 2: Convert to fraction form
    1,458.30/2,011.82 = 926.90/x
  3. Step 3: Cross multiply
    1,458.30x = 2,011.82 × 926.90
  4. Step 4: Simplify right side
    1,458.30x = 1,864,748.51
  5. Step 5: Solve for x
    x = 1,864,748.51/1,458.30
  6. Step 6: Final answer
    x = 1,278.71

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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.