Home / 3,526.40-5,289.20-929.60

Finding the Fourth Proportional to 3,526.40, 5,289.20 and 929.60

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Solution

The fourth proportional to 3,526.40, 5,289.20 and 929.60 is: 1,394.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,526.40 : 5,289.20 = 929.60 : x
  2. Step 2: Convert to fraction form
    3,526.40/5,289.20 = 929.60/x
  3. Step 3: Cross multiply
    3,526.40x = 5,289.20 × 929.60
  4. Step 4: Simplify right side
    3,526.40x = 4,916,840.32
  5. Step 5: Solve for x
    x = 4,916,840.32/3,526.40
  6. Step 6: Final answer
    x = 1,394.29

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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.