Home / 1,551.30-2,139.26-1,374.32

Finding the Fourth Proportional to 1,551.30, 2,139.26 and 1,374.32

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Solution

The fourth proportional to 1,551.30, 2,139.26 and 1,374.32 is: 1,895.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.30 : 2,139.26 = 1,374.32 : x
  2. Step 2: Convert to fraction form
    1,551.30/2,139.26 = 1,374.32/x
  3. Step 3: Cross multiply
    1,551.30x = 2,139.26 × 1,374.32
  4. Step 4: Simplify right side
    1,551.30x = 2,940,010.24
  5. Step 5: Solve for x
    x = 2,940,010.24/1,551.30
  6. Step 6: Final answer
    x = 1,895.19

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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.