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Finding the Fourth Proportional to 4,459.60, 6,689.24 and 1,381.60

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Solution

The fourth proportional to 4,459.60, 6,689.24 and 1,381.60 is: 2,072.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,459.60 : 6,689.24 = 1,381.60 : x
  2. Step 2: Convert to fraction form
    4,459.60/6,689.24 = 1,381.60/x
  3. Step 3: Cross multiply
    4,459.60x = 6,689.24 × 1,381.60
  4. Step 4: Simplify right side
    4,459.60x = 9,241,853.98
  5. Step 5: Solve for x
    x = 9,241,853.98/4,459.60
  6. Step 6: Final answer
    x = 2,072.35

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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.