Home / 7,491.20-10,327.20-5,129.60

Finding the Fourth Proportional to 7,491.20, 10,327.20 and 5,129.60

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Solution

The fourth proportional to 7,491.20, 10,327.20 and 5,129.60 is: 7,071.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,491.20 : 10,327.20 = 5,129.60 : x
  2. Step 2: Convert to fraction form
    7,491.20/10,327.20 = 5,129.60/x
  3. Step 3: Cross multiply
    7,491.20x = 10,327.20 × 5,129.60
  4. Step 4: Simplify right side
    7,491.20x = 52,974,405.12
  5. Step 5: Solve for x
    x = 52,974,405.12/7,491.20
  6. Step 6: Final answer
    x = 7,071.55

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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.