Home / 7,139.23-9,850.74-4,485.10

Finding the Fourth Proportional to 7,139.23, 9,850.74 and 4,485.10

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Solution

The fourth proportional to 7,139.23, 9,850.74 and 4,485.10 is: 6,188.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.23 : 9,850.74 = 4,485.10 : x
  2. Step 2: Convert to fraction form
    7,139.23/9,850.74 = 4,485.10/x
  3. Step 3: Cross multiply
    7,139.23x = 9,850.74 × 4,485.10
  4. Step 4: Simplify right side
    7,139.23x = 44,181,531.55
  5. Step 5: Solve for x
    x = 44,181,531.55/7,139.23
  6. Step 6: Final answer
    x = 6,188.56

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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.