Home / 7,477.80-10,319.26-4,120.60

Finding the Fourth Proportional to 7,477.80, 10,319.26 and 4,120.60

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Solution

The fourth proportional to 7,477.80, 10,319.26 and 4,120.60 is: 5,686.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.80 : 10,319.26 = 4,120.60 : x
  2. Step 2: Convert to fraction form
    7,477.80/10,319.26 = 4,120.60/x
  3. Step 3: Cross multiply
    7,477.80x = 10,319.26 × 4,120.60
  4. Step 4: Simplify right side
    7,477.80x = 42,521,542.76
  5. Step 5: Solve for x
    x = 42,521,542.76/7,477.80
  6. Step 6: Final answer
    x = 5,686.37

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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.