Home / 5,115.12-7,670.80-1,827.32

Finding the Fourth Proportional to 5,115.12, 7,670.80 and 1,827.32

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Solution

The fourth proportional to 5,115.12, 7,670.80 and 1,827.32 is: 2,740.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.12 : 7,670.80 = 1,827.32 : x
  2. Step 2: Convert to fraction form
    5,115.12/7,670.80 = 1,827.32/x
  3. Step 3: Cross multiply
    5,115.12x = 7,670.80 × 1,827.32
  4. Step 4: Simplify right side
    5,115.12x = 14,017,006.26
  5. Step 5: Solve for x
    x = 14,017,006.26/5,115.12
  6. Step 6: Final answer
    x = 2,740.31

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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.