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Finding the Fourth Proportional to 4,902.51, 7,353.75 and 1,980.78

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Solution

The fourth proportional to 4,902.51, 7,353.75 and 1,980.78 is: 2,971.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,902.51 : 7,353.75 = 1,980.78 : x
  2. Step 2: Convert to fraction form
    4,902.51/7,353.75 = 1,980.78/x
  3. Step 3: Cross multiply
    4,902.51x = 7,353.75 × 1,980.78
  4. Step 4: Simplify right side
    4,902.51x = 14,566,160.93
  5. Step 5: Solve for x
    x = 14,566,160.93/4,902.51
  6. Step 6: Final answer
    x = 2,971.16

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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.