Home / 4,909.40-7,363.92-1,211.60

Finding the Fourth Proportional to 4,909.40, 7,363.92 and 1,211.60

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Solution

The fourth proportional to 4,909.40, 7,363.92 and 1,211.60 is: 1,817.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,909.40 : 7,363.92 = 1,211.60 : x
  2. Step 2: Convert to fraction form
    4,909.40/7,363.92 = 1,211.60/x
  3. Step 3: Cross multiply
    4,909.40x = 7,363.92 × 1,211.60
  4. Step 4: Simplify right side
    4,909.40x = 8,922,125.47
  5. Step 5: Solve for x
    x = 8,922,125.47/4,909.40
  6. Step 6: Final answer
    x = 1,817.36

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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.