Home / 7,577.34-11,369.76-3,420.39

Finding the Fourth Proportional to 7,577.34, 11,369.76 and 3,420.39

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Solution

The fourth proportional to 7,577.34, 11,369.76 and 3,420.39 is: 5,132.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,577.34 : 11,369.76 = 3,420.39 : x
  2. Step 2: Convert to fraction form
    7,577.34/11,369.76 = 3,420.39/x
  3. Step 3: Cross multiply
    7,577.34x = 11,369.76 × 3,420.39
  4. Step 4: Simplify right side
    7,577.34x = 38,889,013.41
  5. Step 5: Solve for x
    x = 38,889,013.41/7,577.34
  6. Step 6: Final answer
    x = 5,132.28

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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.