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Finding the Fourth Proportional to 5,909.94, 8,870.31 and 2,990.28

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Solution

The fourth proportional to 5,909.94, 8,870.31 and 2,990.28 is: 4,488.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,909.94 : 8,870.31 = 2,990.28 : x
  2. Step 2: Convert to fraction form
    5,909.94/8,870.31 = 2,990.28/x
  3. Step 3: Cross multiply
    5,909.94x = 8,870.31 × 2,990.28
  4. Step 4: Simplify right side
    5,909.94x = 26,524,710.59
  5. Step 5: Solve for x
    x = 26,524,710.59/5,909.94
  6. Step 6: Final answer
    x = 4,488.15

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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.