Home / 2,888.15-3,985.62-1,561.83

Finding the Fourth Proportional to 2,888.15, 3,985.62 and 1,561.83

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Solution

The fourth proportional to 2,888.15, 3,985.62 and 1,561.83 is: 2,155.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.15 : 3,985.62 = 1,561.83 : x
  2. Step 2: Convert to fraction form
    2,888.15/3,985.62 = 1,561.83/x
  3. Step 3: Cross multiply
    2,888.15x = 3,985.62 × 1,561.83
  4. Step 4: Simplify right side
    2,888.15x = 6,224,860.88
  5. Step 5: Solve for x
    x = 6,224,860.88/2,888.15
  6. Step 6: Final answer
    x = 2,155.31

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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.