Home / 7,239.16-9,990.42-4,095.64

Finding the Fourth Proportional to 7,239.16, 9,990.42 and 4,095.64

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Solution

The fourth proportional to 7,239.16, 9,990.42 and 4,095.64 is: 5,652.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.16 : 9,990.42 = 4,095.64 : x
  2. Step 2: Convert to fraction form
    7,239.16/9,990.42 = 4,095.64/x
  3. Step 3: Cross multiply
    7,239.16x = 9,990.42 × 4,095.64
  4. Step 4: Simplify right side
    7,239.16x = 40,917,163.77
  5. Step 5: Solve for x
    x = 40,917,163.77/7,239.16
  6. Step 6: Final answer
    x = 5,652.20

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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.