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Finding the Fourth Proportional to 4,219.56, 6,328.56 and 1,257.93

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Solution

The fourth proportional to 4,219.56, 6,328.56 and 1,257.93 is: 1,886.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,219.56 : 6,328.56 = 1,257.93 : x
  2. Step 2: Convert to fraction form
    4,219.56/6,328.56 = 1,257.93/x
  3. Step 3: Cross multiply
    4,219.56x = 6,328.56 × 1,257.93
  4. Step 4: Simplify right side
    4,219.56x = 7,960,885.48
  5. Step 5: Solve for x
    x = 7,960,885.48/4,219.56
  6. Step 6: Final answer
    x = 1,886.66

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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.