Home / 5,276.34-7,909.84-1,989.58

Finding the Fourth Proportional to 5,276.34, 7,909.84 and 1,989.58

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Solution

The fourth proportional to 5,276.34, 7,909.84 and 1,989.58 is: 2,982.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.34 : 7,909.84 = 1,989.58 : x
  2. Step 2: Convert to fraction form
    5,276.34/7,909.84 = 1,989.58/x
  3. Step 3: Cross multiply
    5,276.34x = 7,909.84 × 1,989.58
  4. Step 4: Simplify right side
    5,276.34x = 15,737,259.47
  5. Step 5: Solve for x
    x = 15,737,259.47/5,276.34
  6. Step 6: Final answer
    x = 2,982.61

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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.