Home / 7,125.55-10,690.63-3,427.30

Finding the Fourth Proportional to 7,125.55, 10,690.63 and 3,427.30

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Solution

The fourth proportional to 7,125.55, 10,690.63 and 3,427.30 is: 5,142.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.55 : 10,690.63 = 3,427.30 : x
  2. Step 2: Convert to fraction form
    7,125.55/10,690.63 = 3,427.30/x
  3. Step 3: Cross multiply
    7,125.55x = 10,690.63 × 3,427.30
  4. Step 4: Simplify right side
    7,125.55x = 36,639,945.68
  5. Step 5: Solve for x
    x = 36,639,945.68/7,125.55
  6. Step 6: Final answer
    x = 5,142.05

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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.