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Finding the Fourth Proportional to 6,865.40, 10,298.10 and 6,822.20

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Solution

The fourth proportional to 6,865.40, 10,298.10 and 6,822.20 is: 10,233.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,865.40 : 10,298.10 = 6,822.20 : x
  2. Step 2: Convert to fraction form
    6,865.40/10,298.10 = 6,822.20/x
  3. Step 3: Cross multiply
    6,865.40x = 10,298.10 × 6,822.20
  4. Step 4: Simplify right side
    6,865.40x = 70,255,697.82
  5. Step 5: Solve for x
    x = 70,255,697.82/6,865.40
  6. Step 6: Final answer
    x = 10,233.30

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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.