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Finding the Fourth Proportional to 6,912.30, 9,535.51 and 4,390.30

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Solution

The fourth proportional to 6,912.30, 9,535.51 and 4,390.30 is: 6,056.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.30 : 9,535.51 = 4,390.30 : x
  2. Step 2: Convert to fraction form
    6,912.30/9,535.51 = 4,390.30/x
  3. Step 3: Cross multiply
    6,912.30x = 9,535.51 × 4,390.30
  4. Step 4: Simplify right side
    6,912.30x = 41,863,714.74
  5. Step 5: Solve for x
    x = 41,863,714.74/6,912.30
  6. Step 6: Final answer
    x = 6,056.41

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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.