Home / 7,074.64-9,763.20-3,931.02

Finding the Fourth Proportional to 7,074.64, 9,763.20 and 3,931.02

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Solution

The fourth proportional to 7,074.64, 9,763.20 and 3,931.02 is: 5,424.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,074.64 : 9,763.20 = 3,931.02 : x
  2. Step 2: Convert to fraction form
    7,074.64/9,763.20 = 3,931.02/x
  3. Step 3: Cross multiply
    7,074.64x = 9,763.20 × 3,931.02
  4. Step 4: Simplify right side
    7,074.64x = 38,379,334.46
  5. Step 5: Solve for x
    x = 38,379,334.46/7,074.64
  6. Step 6: Final answer
    x = 5,424.92

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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.