Home / 5,678.48-8,517.72-2,391.50

Finding the Fourth Proportional to 5,678.48, 8,517.72 and 2,391.50

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Solution

The fourth proportional to 5,678.48, 8,517.72 and 2,391.50 is: 3,587.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.48 : 8,517.72 = 2,391.50 : x
  2. Step 2: Convert to fraction form
    5,678.48/8,517.72 = 2,391.50/x
  3. Step 3: Cross multiply
    5,678.48x = 8,517.72 × 2,391.50
  4. Step 4: Simplify right side
    5,678.48x = 20,370,127.38
  5. Step 5: Solve for x
    x = 20,370,127.38/5,678.48
  6. Step 6: Final answer
    x = 3,587.25

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1.5x scale

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.