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Finding the Fourth Proportional to 5,909.76, 8,870.04 and 2,990.07

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Solution

The fourth proportional to 5,909.76, 8,870.04 and 2,990.07 is: 4,487.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,909.76 : 8,870.04 = 2,990.07 : x
  2. Step 2: Convert to fraction form
    5,909.76/8,870.04 = 2,990.07/x
  3. Step 3: Cross multiply
    5,909.76x = 8,870.04 × 2,990.07
  4. Step 4: Simplify right side
    5,909.76x = 26,522,040.50
  5. Step 5: Solve for x
    x = 26,522,040.50/5,909.76
  6. Step 6: Final answer
    x = 4,487.84

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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.