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Finding the Fourth Proportional to 5,780.58, 7,980.15 and 4,009.11

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Solution

The fourth proportional to 5,780.58, 7,980.15 and 4,009.11 is: 5,534.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.58 : 7,980.15 = 4,009.11 : x
  2. Step 2: Convert to fraction form
    5,780.58/7,980.15 = 4,009.11/x
  3. Step 3: Cross multiply
    5,780.58x = 7,980.15 × 4,009.11
  4. Step 4: Simplify right side
    5,780.58x = 31,993,299.17
  5. Step 5: Solve for x
    x = 31,993,299.17/5,780.58
  6. Step 6: Final answer
    x = 5,534.62

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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.