Home / 8,740.36-12,070.24-7,474.08

Finding the Fourth Proportional to 8,740.36, 12,070.24 and 7,474.08

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Solution

The fourth proportional to 8,740.36, 12,070.24 and 7,474.08 is: 10,321.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,740.36 : 12,070.24 = 7,474.08 : x
  2. Step 2: Convert to fraction form
    8,740.36/12,070.24 = 7,474.08/x
  3. Step 3: Cross multiply
    8,740.36x = 12,070.24 × 7,474.08
  4. Step 4: Simplify right side
    8,740.36x = 90,213,939.38
  5. Step 5: Solve for x
    x = 90,213,939.38/8,740.36
  6. Step 6: Final answer
    x = 10,321.54

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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.