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Finding the Fourth Proportional to 3,472.95, 4,792.62 and 1,980.89

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Solution

The fourth proportional to 3,472.95, 4,792.62 and 1,980.89 is: 2,733.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,472.95 : 4,792.62 = 1,980.89 : x
  2. Step 2: Convert to fraction form
    3,472.95/4,792.62 = 1,980.89/x
  3. Step 3: Cross multiply
    3,472.95x = 4,792.62 × 1,980.89
  4. Step 4: Simplify right side
    3,472.95x = 9,493,667.95
  5. Step 5: Solve for x
    x = 9,493,667.95/3,472.95
  6. Step 6: Final answer
    x = 2,733.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.