Home / 7,405.85-10,220.09-4,048.70

Finding the Fourth Proportional to 7,405.85, 10,220.09 and 4,048.70

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Solution

The fourth proportional to 7,405.85, 10,220.09 and 4,048.70 is: 5,587.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.85 : 10,220.09 = 4,048.70 : x
  2. Step 2: Convert to fraction form
    7,405.85/10,220.09 = 4,048.70/x
  3. Step 3: Cross multiply
    7,405.85x = 10,220.09 × 4,048.70
  4. Step 4: Simplify right side
    7,405.85x = 41,378,007.04
  5. Step 5: Solve for x
    x = 41,378,007.04/7,405.85
  6. Step 6: Final answer
    x = 5,587.21

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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.