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Finding the Fourth Proportional to 6,520.95, 8,999.30 and 3,688.58

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Solution

The fourth proportional to 6,520.95, 8,999.30 and 3,688.58 is: 5,090.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,520.95 : 8,999.30 = 3,688.58 : x
  2. Step 2: Convert to fraction form
    6,520.95/8,999.30 = 3,688.58/x
  3. Step 3: Cross multiply
    6,520.95x = 8,999.30 × 3,688.58
  4. Step 4: Simplify right side
    6,520.95x = 33,194,637.99
  5. Step 5: Solve for x
    x = 33,194,637.99/6,520.95
  6. Step 6: Final answer
    x = 5,090.46

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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.