Home / 7,280.28-10,942.29-6,405.48

Finding the Fourth Proportional to 7,280.28, 10,942.29 and 6,405.48

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Solution

The fourth proportional to 7,280.28, 10,942.29 and 6,405.48 is: 9,627.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.28 : 10,942.29 = 6,405.48 : x
  2. Step 2: Convert to fraction form
    7,280.28/10,942.29 = 6,405.48/x
  3. Step 3: Cross multiply
    7,280.28x = 10,942.29 × 6,405.48
  4. Step 4: Simplify right side
    7,280.28x = 70,090,619.75
  5. Step 5: Solve for x
    x = 70,090,619.75/7,280.28
  6. Step 6: Final answer
    x = 9,627.46

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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.