Home / 7,240.08-9,990.12-4,095.60

Finding the Fourth Proportional to 7,240.08, 9,990.12 and 4,095.60

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Solution

The fourth proportional to 7,240.08, 9,990.12 and 4,095.60 is: 5,651.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,240.08 : 9,990.12 = 4,095.60 : x
  2. Step 2: Convert to fraction form
    7,240.08/9,990.12 = 4,095.60/x
  3. Step 3: Cross multiply
    7,240.08x = 9,990.12 × 4,095.60
  4. Step 4: Simplify right side
    7,240.08x = 40,915,535.47
  5. Step 5: Solve for x
    x = 40,915,535.47/7,240.08
  6. Step 6: Final answer
    x = 5,651.25

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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.