Home / 4,298.56-6,447.78-1,220.56

Finding the Fourth Proportional to 4,298.56, 6,447.78 and 1,220.56

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Solution

The fourth proportional to 4,298.56, 6,447.78 and 1,220.56 is: 1,830.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,298.56 : 6,447.78 = 1,220.56 : x
  2. Step 2: Convert to fraction form
    4,298.56/6,447.78 = 1,220.56/x
  3. Step 3: Cross multiply
    4,298.56x = 6,447.78 × 1,220.56
  4. Step 4: Simplify right side
    4,298.56x = 7,869,902.36
  5. Step 5: Solve for x
    x = 7,869,902.36/4,298.56
  6. Step 6: Final answer
    x = 1,830.82

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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.