Home / 7,485.98-10,330.91-4,128.90

Finding the Fourth Proportional to 7,485.98, 10,330.91 and 4,128.90

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Solution

The fourth proportional to 7,485.98, 10,330.91 and 4,128.90 is: 5,698.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.98 : 10,330.91 = 4,128.90 : x
  2. Step 2: Convert to fraction form
    7,485.98/10,330.91 = 4,128.90/x
  3. Step 3: Cross multiply
    7,485.98x = 10,330.91 × 4,128.90
  4. Step 4: Simplify right side
    7,485.98x = 42,655,273.65
  5. Step 5: Solve for x
    x = 42,655,273.65/7,485.98
  6. Step 6: Final answer
    x = 5,698.03

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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.