Home / 5,405.16-8,108.22-2,807.40

Finding the Fourth Proportional to 5,405.16, 8,108.22 and 2,807.40

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Solution

The fourth proportional to 5,405.16, 8,108.22 and 2,807.40 is: 4,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.16 : 8,108.22 = 2,807.40 : x
  2. Step 2: Convert to fraction form
    5,405.16/8,108.22 = 2,807.40/x
  3. Step 3: Cross multiply
    5,405.16x = 8,108.22 × 2,807.40
  4. Step 4: Simplify right side
    5,405.16x = 22,763,016.83
  5. Step 5: Solve for x
    x = 22,763,016.83/5,405.16
  6. Step 6: Final answer
    x = 4,211.35

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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.