Home / 7,530.12-10,391.36-4,172.85

Finding the Fourth Proportional to 7,530.12, 10,391.36 and 4,172.85

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Solution

The fourth proportional to 7,530.12, 10,391.36 and 4,172.85 is: 5,758.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,530.12 : 10,391.36 = 4,172.85 : x
  2. Step 2: Convert to fraction form
    7,530.12/10,391.36 = 4,172.85/x
  3. Step 3: Cross multiply
    7,530.12x = 10,391.36 × 4,172.85
  4. Step 4: Simplify right side
    7,530.12x = 43,361,565.71
  5. Step 5: Solve for x
    x = 43,361,565.71/7,530.12
  6. Step 6: Final answer
    x = 5,758.42

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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.