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Finding the Fourth Proportional to 6,607.51, 9,912.50 and 5,385.63

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Solution

The fourth proportional to 6,607.51, 9,912.50 and 5,385.63 is: 8,079.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,607.51 : 9,912.50 = 5,385.63 : x
  2. Step 2: Convert to fraction form
    6,607.51/9,912.50 = 5,385.63/x
  3. Step 3: Cross multiply
    6,607.51x = 9,912.50 × 5,385.63
  4. Step 4: Simplify right side
    6,607.51x = 53,385,057.38
  5. Step 5: Solve for x
    x = 53,385,057.38/6,607.51
  6. Step 6: Final answer
    x = 8,079.45

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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.