Home / 1,857.15-2,565.36-1,486.78

Finding the Fourth Proportional to 1,857.15, 2,565.36 and 1,486.78

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Solution

The fourth proportional to 1,857.15, 2,565.36 and 1,486.78 is: 2,053.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.15 : 2,565.36 = 1,486.78 : x
  2. Step 2: Convert to fraction form
    1,857.15/2,565.36 = 1,486.78/x
  3. Step 3: Cross multiply
    1,857.15x = 2,565.36 × 1,486.78
  4. Step 4: Simplify right side
    1,857.15x = 3,814,125.94
  5. Step 5: Solve for x
    x = 3,814,125.94/1,857.15
  6. Step 6: Final answer
    x = 2,053.75

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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.