Home / 7,585.76-11,374.52-3,420.89

Finding the Fourth Proportional to 7,585.76, 11,374.52 and 3,420.89

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Solution

The fourth proportional to 7,585.76, 11,374.52 and 3,420.89 is: 5,129.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,585.76 : 11,374.52 = 3,420.89 : x
  2. Step 2: Convert to fraction form
    7,585.76/11,374.52 = 3,420.89/x
  3. Step 3: Cross multiply
    7,585.76x = 11,374.52 × 3,420.89
  4. Step 4: Simplify right side
    7,585.76x = 38,910,964.62
  5. Step 5: Solve for x
    x = 38,910,964.62/7,585.76
  6. Step 6: Final answer
    x = 5,129.48

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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.