Home / 5,678.16-8,518.32-1,781.52

Finding the Fourth Proportional to 5,678.16, 8,518.32 and 1,781.52

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Solution

The fourth proportional to 5,678.16, 8,518.32 and 1,781.52 is: 2,672.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.16 : 8,518.32 = 1,781.52 : x
  2. Step 2: Convert to fraction form
    5,678.16/8,518.32 = 1,781.52/x
  3. Step 3: Cross multiply
    5,678.16x = 8,518.32 × 1,781.52
  4. Step 4: Simplify right side
    5,678.16x = 15,175,557.45
  5. Step 5: Solve for x
    x = 15,175,557.45/5,678.16
  6. Step 6: Final answer
    x = 2,672.62

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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.