Home / 7,485.99-10,330.73-4,128.92

Finding the Fourth Proportional to 7,485.99, 10,330.73 and 4,128.92

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Solution

The fourth proportional to 7,485.99, 10,330.73 and 4,128.92 is: 5,697.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.99 : 10,330.73 = 4,128.92 : x
  2. Step 2: Convert to fraction form
    7,485.99/10,330.73 = 4,128.92/x
  3. Step 3: Cross multiply
    7,485.99x = 10,330.73 × 4,128.92
  4. Step 4: Simplify right side
    7,485.99x = 42,654,755.12
  5. Step 5: Solve for x
    x = 42,654,755.12/7,485.99
  6. Step 6: Final answer
    x = 5,697.94

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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.