Home / 1,555.73-2,146.98-926.12

Finding the Fourth Proportional to 1,555.73, 2,146.98 and 926.12

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Solution

The fourth proportional to 1,555.73, 2,146.98 and 926.12 is: 1,278.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.73 : 2,146.98 = 926.12 : x
  2. Step 2: Convert to fraction form
    1,555.73/2,146.98 = 926.12/x
  3. Step 3: Cross multiply
    1,555.73x = 2,146.98 × 926.12
  4. Step 4: Simplify right side
    1,555.73x = 1,988,350.38
  5. Step 5: Solve for x
    x = 1,988,350.38/1,555.73
  6. Step 6: Final answer
    x = 1,278.08

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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.