Home / 5,678.84-8,516.40-2,391.32

Finding the Fourth Proportional to 5,678.84, 8,516.40 and 2,391.32

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Solution

The fourth proportional to 5,678.84, 8,516.40 and 2,391.32 is: 3,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.84 : 8,516.40 = 2,391.32 : x
  2. Step 2: Convert to fraction form
    5,678.84/8,516.40 = 2,391.32/x
  3. Step 3: Cross multiply
    5,678.84x = 8,516.40 × 2,391.32
  4. Step 4: Simplify right side
    5,678.84x = 20,365,437.65
  5. Step 5: Solve for x
    x = 20,365,437.65/5,678.84
  6. Step 6: Final answer
    x = 3,586.20

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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.