Home / 7,529.55-10,390.59-4,172.31

Finding the Fourth Proportional to 7,529.55, 10,390.59 and 4,172.31

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Solution

The fourth proportional to 7,529.55, 10,390.59 and 4,172.31 is: 5,757.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,529.55 : 10,390.59 = 4,172.31 : x
  2. Step 2: Convert to fraction form
    7,529.55/10,390.59 = 4,172.31/x
  3. Step 3: Cross multiply
    7,529.55x = 10,390.59 × 4,172.31
  4. Step 4: Simplify right side
    7,529.55x = 43,352,762.56
  5. Step 5: Solve for x
    x = 43,352,762.56/7,529.55
  6. Step 6: Final answer
    x = 5,757.68

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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.