Home / 5,715.84-8,536.80-5,678.64

Finding the Fourth Proportional to 5,715.84, 8,536.80 and 5,678.64

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Solution

The fourth proportional to 5,715.84, 8,536.80 and 5,678.64 is: 8,481.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.84 : 8,536.80 = 5,678.64 : x
  2. Step 2: Convert to fraction form
    5,715.84/8,536.80 = 5,678.64/x
  3. Step 3: Cross multiply
    5,715.84x = 8,536.80 × 5,678.64
  4. Step 4: Simplify right side
    5,715.84x = 48,477,413.95
  5. Step 5: Solve for x
    x = 48,477,413.95/5,715.84
  6. Step 6: Final answer
    x = 8,481.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.