Home / 1,787.31-2,467.26-1,345.32

Finding the Fourth Proportional to 1,787.31, 2,467.26 and 1,345.32

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Solution

The fourth proportional to 1,787.31, 2,467.26 and 1,345.32 is: 1,857.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.31 : 2,467.26 = 1,345.32 : x
  2. Step 2: Convert to fraction form
    1,787.31/2,467.26 = 1,345.32/x
  3. Step 3: Cross multiply
    1,787.31x = 2,467.26 × 1,345.32
  4. Step 4: Simplify right side
    1,787.31x = 3,319,254.22
  5. Step 5: Solve for x
    x = 3,319,254.22/1,787.31
  6. Step 6: Final answer
    x = 1,857.12

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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.