Home / 7,366.11-10,139.56-6,420.26

Finding the Fourth Proportional to 7,366.11, 10,139.56 and 6,420.26

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Solution

The fourth proportional to 7,366.11, 10,139.56 and 6,420.26 is: 8,837.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,366.11 : 10,139.56 = 6,420.26 : x
  2. Step 2: Convert to fraction form
    7,366.11/10,139.56 = 6,420.26/x
  3. Step 3: Cross multiply
    7,366.11x = 10,139.56 × 6,420.26
  4. Step 4: Simplify right side
    7,366.11x = 65,098,656.90
  5. Step 5: Solve for x
    x = 65,098,656.90/7,366.11
  6. Step 6: Final answer
    x = 8,837.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.