Home / 6,867.60-10,301.40-5,215.20

Finding the Fourth Proportional to 6,867.60, 10,301.40 and 5,215.20

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Solution

The fourth proportional to 6,867.60, 10,301.40 and 5,215.20 is: 7,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,867.60 : 10,301.40 = 5,215.20 : x
  2. Step 2: Convert to fraction form
    6,867.60/10,301.40 = 5,215.20/x
  3. Step 3: Cross multiply
    6,867.60x = 10,301.40 × 5,215.20
  4. Step 4: Simplify right side
    6,867.60x = 53,723,861.28
  5. Step 5: Solve for x
    x = 53,723,861.28/6,867.60
  6. Step 6: Final answer
    x = 7,822.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.