Home / 5,284.40-7,938.84-3,316.16

Finding the Fourth Proportional to 5,284.40, 7,938.84 and 3,316.16

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Solution

The fourth proportional to 5,284.40, 7,938.84 and 3,316.16 is: 4,981.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,284.40 : 7,938.84 = 3,316.16 : x
  2. Step 2: Convert to fraction form
    5,284.40/7,938.84 = 3,316.16/x
  3. Step 3: Cross multiply
    5,284.40x = 7,938.84 × 3,316.16
  4. Step 4: Simplify right side
    5,284.40x = 26,326,463.65
  5. Step 5: Solve for x
    x = 26,326,463.65/5,284.40
  6. Step 6: Final answer
    x = 4,981.92

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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.