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Finding the Fourth Proportional to 6,900, 9,528.48 and 4,809.92

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Solution

The fourth proportional to 6,900, 9,528.48 and 4,809.92 is: 6,642.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,900 : 9,528.48 = 4,809.92 : x
  2. Step 2: Convert to fraction form
    6,900/9,528.48 = 4,809.92/x
  3. Step 3: Cross multiply
    6,900x = 9,528.48 × 4,809.92
  4. Step 4: Simplify right side
    6,900x = 45,831,226.52
  5. Step 5: Solve for x
    x = 45,831,226.52/6,900
  6. Step 6: Final answer
    x = 6,642.21

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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.