Home / 4,687.30-6,989.60-4,645.10

Finding the Fourth Proportional to 4,687.30, 6,989.60 and 4,645.10

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Solution

The fourth proportional to 4,687.30, 6,989.60 and 4,645.10 is: 6,926.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.30 : 6,989.60 = 4,645.10 : x
  2. Step 2: Convert to fraction form
    4,687.30/6,989.60 = 4,645.10/x
  3. Step 3: Cross multiply
    4,687.30x = 6,989.60 × 4,645.10
  4. Step 4: Simplify right side
    4,687.30x = 32,467,390.96
  5. Step 5: Solve for x
    x = 32,467,390.96/4,687.30
  6. Step 6: Final answer
    x = 6,926.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.