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Finding the Fourth Proportional to 3,312.53, 4,968.79 and 847.35

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Solution

The fourth proportional to 3,312.53, 4,968.79 and 847.35 is: 1,271.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.53 : 4,968.79 = 847.35 : x
  2. Step 2: Convert to fraction form
    3,312.53/4,968.79 = 847.35/x
  3. Step 3: Cross multiply
    3,312.53x = 4,968.79 × 847.35
  4. Step 4: Simplify right side
    3,312.53x = 4,210,304.21
  5. Step 5: Solve for x
    x = 4,210,304.21/3,312.53
  6. Step 6: Final answer
    x = 1,271.02

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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.