Home / 5,577.40-8,358.80-2,807.20

Finding the Fourth Proportional to 5,577.40, 8,358.80 and 2,807.20

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Solution

The fourth proportional to 5,577.40, 8,358.80 and 2,807.20 is: 4,207.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,577.40 : 8,358.80 = 2,807.20 : x
  2. Step 2: Convert to fraction form
    5,577.40/8,358.80 = 2,807.20/x
  3. Step 3: Cross multiply
    5,577.40x = 8,358.80 × 2,807.20
  4. Step 4: Simplify right side
    5,577.40x = 23,464,823.36
  5. Step 5: Solve for x
    x = 23,464,823.36/5,577.40
  6. Step 6: Final answer
    x = 4,207.13

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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.