Home / 1,557.09-2,335.62-387.08

Finding the Fourth Proportional to 1,557.09, 2,335.62 and 387.08

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Solution

The fourth proportional to 1,557.09, 2,335.62 and 387.08 is: 580.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.09 : 2,335.62 = 387.08 : x
  2. Step 2: Convert to fraction form
    1,557.09/2,335.62 = 387.08/x
  3. Step 3: Cross multiply
    1,557.09x = 2,335.62 × 387.08
  4. Step 4: Simplify right side
    1,557.09x = 904,060.11
  5. Step 5: Solve for x
    x = 904,060.11/1,557.09
  6. Step 6: Final answer
    x = 580.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.