Home / 1,551.95-2,141.70-922.81

Finding the Fourth Proportional to 1,551.95, 2,141.70 and 922.81

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Solution

The fourth proportional to 1,551.95, 2,141.70 and 922.81 is: 1,273.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.95 : 2,141.70 = 922.81 : x
  2. Step 2: Convert to fraction form
    1,551.95/2,141.70 = 922.81/x
  3. Step 3: Cross multiply
    1,551.95x = 2,141.70 × 922.81
  4. Step 4: Simplify right side
    1,551.95x = 1,976,382.18
  5. Step 5: Solve for x
    x = 1,976,382.18/1,551.95
  6. Step 6: Final answer
    x = 1,273.48

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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.