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Finding the Fourth Proportional to 4,902.64, 7,354.40 and 1,392.68

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Solution

The fourth proportional to 4,902.64, 7,354.40 and 1,392.68 is: 2,089.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,902.64 : 7,354.40 = 1,392.68 : x
  2. Step 2: Convert to fraction form
    4,902.64/7,354.40 = 1,392.68/x
  3. Step 3: Cross multiply
    4,902.64x = 7,354.40 × 1,392.68
  4. Step 4: Simplify right side
    4,902.64x = 10,242,282.06
  5. Step 5: Solve for x
    x = 10,242,282.06/4,902.64
  6. Step 6: Final answer
    x = 2,089.14

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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.