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Finding the Fourth Proportional to 5,267.95, 7,901.55 and 1,980.79

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Solution

The fourth proportional to 5,267.95, 7,901.55 and 1,980.79 is: 2,971.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,267.95 : 7,901.55 = 1,980.79 : x
  2. Step 2: Convert to fraction form
    5,267.95/7,901.55 = 1,980.79/x
  3. Step 3: Cross multiply
    5,267.95x = 7,901.55 × 1,980.79
  4. Step 4: Simplify right side
    5,267.95x = 15,651,311.22
  5. Step 5: Solve for x
    x = 15,651,311.22/5,267.95
  6. Step 6: Final answer
    x = 2,971.04

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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.