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Finding the Fourth Proportional to 3,156.40, 4,735.44 and 966.16

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Solution

The fourth proportional to 3,156.40, 4,735.44 and 966.16 is: 1,449.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.40 : 4,735.44 = 966.16 : x
  2. Step 2: Convert to fraction form
    3,156.40/4,735.44 = 966.16/x
  3. Step 3: Cross multiply
    3,156.40x = 4,735.44 × 966.16
  4. Step 4: Simplify right side
    3,156.40x = 4,575,192.71
  5. Step 5: Solve for x
    x = 4,575,192.71/3,156.40
  6. Step 6: Final answer
    x = 1,449.50

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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.