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Finding the Fourth Proportional to 4,443.60, 6,665.40 and 2,807.40

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Solution

The fourth proportional to 4,443.60, 6,665.40 and 2,807.40 is: 4,211.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,443.60 : 6,665.40 = 2,807.40 : x
  2. Step 2: Convert to fraction form
    4,443.60/6,665.40 = 2,807.40/x
  3. Step 3: Cross multiply
    4,443.60x = 6,665.40 × 2,807.40
  4. Step 4: Simplify right side
    4,443.60x = 18,712,443.96
  5. Step 5: Solve for x
    x = 18,712,443.96/4,443.60
  6. Step 6: Final answer
    x = 4,211.10

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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.